+1 Physics Previous (2009-2016) Questions Chapter WiseChapter 1 - Physical World b) Weak Nuclear Force 1. Which one of the following fundamental c) Gravitational Force forces in nature binds Protons and neutrons d) Electromagnetic Force [Imp-2013] in a nucleus? a) Gravitational force b) Electromagnetic force Chapter 2 c) Strong nuclear force d) Weak nuclear force Units and Measurements (1) [SEPT-2016] 1. a) Length of a sheet is 17.3 0.3cm and 2. Which one of the following is present breadth is 3.12 0.08cm. Calculate the between all object in universe? percentage error in the area. (2) a) Electromagnetic force b) Using the principle of homogeneity of b) Magnetic Force equations, check whether the equation is c) Gravitational force g d) Strong nuclear force correct. T 2 l (1) [March 2016] T time, g acceleration 3. Choose the WRONG statement from the following statements. l length (2) [SEPT-2016] a) Electromagnetic force is the force between charged particles. 2. a) The error in the measurement of radius of a circle is 0.6%. Find the b) Electrostatic force can be attractive or percentage error in the calculation of the area repulsive. of the circle. (2) [March 2016] c) Nuclear force binds protons and b) Name the principle used to check neutrons in a nucleus. the correctness of an equation. (1) d) Gravitational force is one of the c) What is the number of significant strongest forces among fundamental forces in figures in 0.00820 J? (1) nature. (1) [Imp 2015] 3. The correctness of equations can be 4. Choose the correct answer from the checked using the principle of homogeneity. brackets: [March 2015] a) State the principle of homogeneity. (1) a) Weakest force in nature is...... (1) b) Using this principle, check whether the (Strong nuclear force, following equation is dimensionally correct. Electromagnetic force, 1 2 mv mgh 2 Gravitational force, Weak nuclear force) Where m is the mass of the body, v is its b) 980 F = .............K (1) velocity, g is the acceleration due to gravity (36.7, 40, 309.7, 371) and h is the height. (2) 5. The weakest force found in nature (1) c) If percentage errors of measurement in a) Strong Nuclear Force velocity and mass are 2% and 4% Saju K John M.Sc. Physics, NET, Doctoral Research Fellow at NIT Calicut Page1 +1 Physics Previous (2009-2016) Questions Chapter Wise respectively, what is the percentage error in 9. Velocity of sound depends on density (p) kinetic energy? (1) [Imp 2015] and modulus of elasticity (E). (the dimensional formula of E is ML-1T-2). 4. a) Suggest a method to measure the diameter of the Moon. (1) a) State the principle of homogeneity b) Length, breadth and thickness of a b) Using the above principle, arrive at an block is measured using Vernier callipers. The expression for the velocity of sound. (Take percentage errors in the measurements are K=1). [March-2013] 2%, 1% and 3% respectively. Estimate the percentage error in its volume. (1) 10. a) Which measurement is most precise? c) A physical quantity is given by i. Vernier Calipers having 5 divisions on sliding scale. Fv 2 h . F is the force, v is the velocity ii. Vernier Calipers having 10 divisions L on sliding scale. and L is the angular momentum. Find the iii. Vernier Calipers having 20 divisions dimensions of h . (2) [March 2015] on sliding scale. 5. Dimensional method helps in converting b) What happened to the accuracy when the units from one system to another. (1 + 2) the least count is decreased? [Imp-2012] a) Name the principle used for the above 11. a) A boy recalls the relativistic mass purpose. m0 b) Using dimensions, prove wrongly as m . Using dimensional 1V 2 1 Newton=105 dyne. [Imp-2014] method put the missing ‘C’ at the proper place. 6. The correctness of an equation is checked using the principle of homogeneity. b) Name and state the principle used in solving the above problem. [Imp-2012] For an equation x a bt ct 2, 12. Select the correct answer: where x is in metre and t in second. What will be the dimension of ‘b’? (1) [Imp-2013] a) Light year is the unit of........... 7. Significant figures determine the accuracy i) time ii) length of the measurement of a physical quantity. iii) year iv) velocity a) The radius of a sphere is given by b) kilowatt-hour is the unit of ......... R=1.03m. How many significant figures are there in it? (1) i) energy ii) power b) If the percentage error in calculating the iii) time iv) mass [March 2012] radius of the sphere is 2% what will be the percentage error in calculating the volume? 13. All physical quantities can be expressed in terms of dimension. (1) [Imp-2013] a) Write the physical quantities of the 8. Pick out the fundamental unit from the following dimensions: following: i) [ M 1 L 1 T -1 ] ii) [ M 1 L 2 T -2 ] Second, m/s, Newton, Joule [March-2013] b) Check whether the equation Saju K John M.Sc. Physics, NET, Doctoral Research Fellow at NIT Calicut Page2 +1 Physics Previous (2009-2016) Questions Chapter Wise m b) A dimensionless physical quantity T 2 is dimensionally correct. but having unit in SI system. g c) Two physical quantities which have T Time period of a simple the same dimensions. [ Imp – 2010] Pendulum. m mass of the bob. 19. A company manufacturing PVC pipes g acceleration due to gravity. claims in an advertisement that the volume of [March 2012] water flowing out through the pipe in a given 14. To measure distance we use different time is as per the equation V = KA2ut where units. Which of the following is the largest A is the area of cross section of the pipe, u is unit of the length? the speed of flow, t is the time and K is a dimensionless constant. a) Kilometre b) Astronomical unit a) Name the principle that can be used to c) Light year check the dimensional correctness of d) Parsec [Imp-2011] this equation. b) Check the equation and state whether 15. Which of the following measurement is the claim can be correct. more accurate? Why? [ Imp – 2010] i. 500.00kg. 20. Mechanical power is represented by ii. 0.0005kg. P Fv Av3 where, F is the force, v is the iii. 6.00kg. [Imp-2011] velocity, A is the area and is the density. 16. a) Pick out the odd one in the given pairs. a) The dimensional formula of power i. Angular velocity and frequency. is............ ii. Work and energy. b) Check the dimensional validity of the iii. Angle and strain. above equation. iv. Impulse and momentum. c) Which of the following equations can’t be obtained by the dimensional b) 1 light year = ......... m method? [March – 2011] i. T K l lg ii. E kmv 2 17. a) A student was asked to write the equation for displacement at any instant in a iii. P h g simple harmonic motion of amplitude ‘a’. He iv. N N 0 e t 2 v wrote the equation as y a sin t. Where [March 2010] k ‘v’ is the velocity at instant’s’. For the 21. Match the following: equation to be dimensionally correct, what should be the dimensions of k? Coefficient ML-1 T-2 a of viscosity Force / area b) What is the area of a square of side 1.4 number cm in proper significant figures? Gravitational Force / area M-1L3 T-2 b constant velocitygradient [ March – 2011] Modulus of Force (dis tan ce) 18. Give examples for the following: c elasticity (mass) 2 M L-1 T-1 a) A dimensionless, unit less physical quantity. [ Imp – 2009] Saju K John M.Sc. Physics, NET, Doctoral Research Fellow at NIT Calicut Page3 +1 Physics Previous (2009-2016) Questions Chapter Wise 22. Fill in the blanks: 2. Velocity – time graph of an object is a) I micron =.................m. given below. [March 2016] b) Hertz is the unit of ............. [MARCH-2009] 23. a) A student writes the equations for the relativistic variation of mass with velocity as m0 m= x2 1 c2 a) What type of motion is indicated by the above graph? (1) Where ‘mo ’ is the rest mass and ‘c’ is the b) Derive a relation connecting the speed of light. What is the dimensional displacement and time for this type formula for ‘x’? of motion. (2) b) If the percentage error in the c) The ratio of velocity to speed of an measurement of radius ‘R’ of a sphere is 2%, object is.................... then what is the percentage error in its i. One ii. Greater than one volume? iii. Less than one iv. Either less than [MARCH-2009] one or equal to one. (1) 3. Figure 1 shows displacement-time graph of runner A. Figure 2 shows velocity-time graph Chapter-3 of runner B. Motion in a Straight Line a) Identify the type of motion the runner A has. 1. Velocity – time graph of a body is given below. i) Uniform motion ii) Non-uniform motion iii) Accelerated motion iv) Jerking motion (1) b) Derive a mathematical relation that connects displacement, velocity and time for runner A. (2) a) Which portion of the graph c) Analysing the above two graphs, find represents uniform retardation? which runner will win the race. Why? (i) OA (ii)AB (iii) BC (iv) OC (1) b) Find the displacement in time 2s to 7s. (1) c) A stone is dropped from a height h. Arrive at an expression for the time taken to reach the ground. (2) [SEPT-2016] (Here θ1> θ2). (1) [Imp 2015] Saju K John M.Sc. Physics, NET, Doctoral Research Fellow at NIT Calicut Page4 . What is its c) Draw the position – time graph of the average velocity and Average speed? above motion. A bus moving along a long and body moving with uniform straight road. (1) travels along a straight line. and returns to A at 90 km/hr.. Which type of 6.... i...... 5m/s velocity? b) Is the motion of the bus uniform or c) A car travels from A to B at 60 km/hr non-uniform? Justify your answer. becomes equal to the instantaneous 10s . a) Complete the following table a) Distinguish between average velocity Time taken Displacement Velocity and instantaneous velocity. Explain. Doctoral Research Fellow at NIT Calicut Page5 ..... NET. Figure given below shows the motion of a a) Estimate the velocity during the time school bus starting from the point O and interval t = 2s to t = 3s. b) Draw the velocity – time graph of a ii. a) State in the following cases whether the acceleration without velocity? motion is one.. +1 Physics Previous (2009-2016) Questions Chapter Wise 4... equation for displacement in time ‘t’. two or three dimensions. Position – time graph of a body is given. obtain the uniform motion in one dimension. Velocity is defined as the rate of change of displacement. 7.(b) carefully and state which of these can’t Saju K John M. A butterfly flying around a flower... Physics.... (a) and fig. d) A student in the school bus notices the (2+1+2) [Imp-2014] speedometer of the bus.. Acceleration – time graph of a body is shown below: a) Drawn the corresponding velocity-time graph. from 0 b) When does the average velocity 2s 10-0=10m .. (2) [March 2015] 5. [March-2013] a) Is it possible for a body to have 9.. b) Derive the equations of motion for non- c) Using the above graph. b) What does the area under the velocity – time graph represent? c) Arrive at a relation connecting velocity (v) and time (t) for a uniformly accelerated body.. b) Displacement of an object is proportional to t3. acceleration ‘a’ and initial velocity Vo. (1+ 1+ 2) [March 2014] c) Look at the graph in fig.Sc. Acceleration is defined as the rate of speed is shown by the speedometer? change of velocity.. Show that its acceleration is increasing with time.. (1+1+2) [Imp-2013] 8. will the stopping distance change? c) Find the displacement in the given [March – 2011] interval of time from 0 to 3 seconds. A car is moving along the circumference of a circle of radius r. This distance is called stopping distance. Doctoral Research Fellow at NIT Calicut Page6 . by how much above graph. From the graph. [Imp-2012] motion. Physics. Draw the velocity-time graph of the [Imp-2012] body. 14. a = 0 possessing zero velocity and still accelerating. Acceleration – time graph of a body starts in 20 seconds. deduce the velocity-time relation and the velocity- displacement relation. 16. Give an example of a body a) V 0. Acceleration is the time rate of change of velocity. Saju K John M. +1 Physics Previous (2009-2016) Questions Chapter Wise possible represent one-dimensional motion whether it can represent one-dimensional with reasons. a) The figure shown the position – time a) What is the distance travelled in one graph of a body moving along a straight line. [ March – 2011] 15. b) V = 0. a) Write an expression for stopping a) What is the use of the acceleration-time distance in terms of initial velocity (u) graph? and retardation (a). a 0 c) V > 0. When breaks are applied on a moving vehicle. [March-2012] give an example of a physical situation for each of the following cases. If v is the velocity and a is the acceleration. Graph representing the motion of two 17. Explain. NET. it stops after travelling a distance. A ball is thrown horizontally from the top bodies are shown below. Take g = 10 ms-2. [Imp-2011] 10. ii. b) If the initial speed is doubled keeping b) Draw the velocity – time graph using the the retardation same. find the displacement 11. a > 0 [ Imp – 2010] 13. i. State with reason of a tower with a velocity of 40 ms-1. 12. from rest as shown below: b) From the velocity-time graph of a body moving with uniform acceleration.Sc. revolution? b) What is the displacement in one revolution? c) What is the speedometer of the car measure? d) Can a body have acceleration without velocity. a < 0 [Imp-2011] d) V < 0. ground with greater velocity? (d) A car covers the first half of the b) A boy drops a ball through the window distance between two places at a speed of of a train. the time of ascent is equal to the time of descent. observed by [MARCH-2009] 1. Show that (a) The slope of position – time graph of a in the absence of air resistance. A. the distance travelled in the distance the truck would have moved before second half is three times of that in the first the brakes take hold? [ Imp – 2009] half. What will be the path of the ball as Calculate the average speed of the car.5 seconds. Momentum taken into account. normally it takes sometime before we then the path of the motion of ball. Displacement c) Shown that when air resistance is also C. Physics. for a ball particle gives: thrown upwards. a) Acceleration is the time rate at which brakes which give the truck an acceleration of velocity of a body changes. require a frame of reference. The same boy sitting in the train? 2. the time of descent is (b) Give an example of a body possessing greater than the time of ascent. Motion is common to everything in the b) The acceleration caused by the earth’s Universe. a) Identify the scalar quantity from the 20. 22. Doctoral Research Fellow at NIT Calicut Page7 . A third boy sitting in a train moving in the opposite direction on a parallel Motion in a Plane track? [ Imp – 2009] 1. velocity. a ) A ball thrown vertically upwards from some time. In situations demanding our immediate displacement after 1.2. zero velocity and that is still accelerating. After a reaction time he applies the 18.3. What are the inertial and non-inertial frames of references? (i) Momentum (ii) Work b) Can a frame of reference fixed at a point (iii)Torque (iv) Acceleration (1) on the surface of earth be truly inertial? Why? [ Imp – 2009] Saju K John M. acceleration due to gravity. This time is known as reaction b) If the ball reaches the ground in 4 time. Which ball will hit the the car. find the height of the tower. A truck is moving forward at a constant seconds.Sc. really respond. Acceleration B. which is moving with the uniform 40kmph and the second half at 60kmph. speed of 20 m/s. What will be the maximum allowable car. +1 Physics Previous (2009-2016) Questions Chapter Wise a) Find the horizontal and vertical 21. Velocity D. Draw the velocity time graph of same velocity V. It is the change of position of an attraction towards its centre is known as object with time. moves with a uniform velocity for the top of a tower with a velocity V. Another boy standing on the platform? and Chapter 4 3.4. Another some time and comes to rest with a uniform ball is thrown vertically downwards with the retardation. moving with constant acceleration for a reaction time to avoid a collision and what period of time. [ Imp – 2009] (c) A car starts accelerating from rest for 19. NET. It is always directed towards the centre of earth. a) To describe the motion of a body we following alternatives. action. The driver sees a car in front [March 2010] of him at a distance of 110 meters stopping suddenly. Show that for a -3 m/s2. . F2 . Observe the following diagram... Saju K John M. (2) [SEPT-2016] state this law. Draw the path with the horizontal. (1) the parallelogram law of vector b) With the help of a vector diagram. Time of flight. Projectile is a particle which is projected into the air with an initial velocity against the a) What are the vertical and horizontal components of velocity? (1) gravity.Follows an elliptical path iv. The ball.. the horizontal.... Find maximum height of this projectile. x and y are in 80 meters. (1+1+2) b) With a diagram. window of a train travelling with high velocity... to a man standing near [Imp-2014] the track.... (1) a) Working of sling is based on. When a body is projected into air with certain initial velocity making an angle with stone. +1 Physics Previous (2009-2016) Questions Chapter Wise b) A man throws a stone up into air at an 4. (4) c) A ball is dropped through the c) Obtain the expression for time of flight.. (2) [Imp 2015] 5. ii. of the projectile and mark directions of a) What is the trajectory followed by this velocity and acceleration at the highest projectile? position... derive an expression a) What is the angle of projection for for : maximum horizontal range? i.... it will travel in a parabolic [March 2015] path.. A stone is thrown with the help of a sling with initial velocity v0 at an a) The forces F1 .... Physics... NET. A body is projected into air at an angle θ angle ' ' with the horizontal. Doctoral Research Fellow at NIT Calicut Page8 . F3 are together angle from called . (1) the horizontal.. iii) Straight line iv) Circle (1) (2) [SEPT-2016] b) Give a mathematical proof for your answer. (1+ 1+ 1) iii. (2) i) Ellipse ii) Parabola c) Derive an expression for the maximum height reached by the stone. 7... (2) 2....Follows a parabolic path (1) a) Define centripetal acceleration.Moves straight horizontally centripetal acceleration.Sc. b) Calculate the mass of the stone using law of vector addition.Falls down vertically of two – dimensional motion having ii.. [March 2016] 6.. Maximum height b) Draw the trajectory of a projectile... Uniform circular motion is a special case i. (1) c) Derive the expression for the maximum height reached by the 3. addition. c) Trajectory of a body in a projectile x2 motion is given by y x . NET. hall? [Imp-2012] C: Assertion is correct. [March 2014] a) State the law. What is the maximum horizontal distance that the ball thrown with a speed of B: Both assertion and reason are 40 m/s can go without hitting the ceiling of the wrong. The centripetal force on a body in circular c) A man can jump on moon six times as high as on earth. (1+3+1) their resultant are the same. 9. 10. Suggest the angle by which the athlete velocities VA and VB . A parallelogram law helps to find the are wrong. An athlete jumps at an angle of 300 with a maxim um speed of 9.4m/s. A and B are two objects moving with c) Find the range covered by him in the above jump. ‘u’ in the direction making an angle with the horizontal. [Imp-2014] 2) Maximum height 8. but reason is correct. +1 Physics Previous (2009-2016) Questions Chapter Wise b) Can a body have acceleration with b) A particle is projected with a velocity constant speed? Explain. of 35 m/s. the angle of projection.Sc. A stone is thrown upward from a moving b) If the magnitude of two vectors and train. a) Obtain expression for Time of flight Reason: the range does not depend on for a projectile motion. c) Express angular velocity in terms of 1) Time of flight angular displacement. write an a) What is the shape of the path followed by equation to find % error in centripetal the athlete in the jump? force. Doctoral Research Fellow at NIT Calicut Page9 . b) What is the angle of projection for Choose the correct answer: maximum horizontal range? A: Both assertion and reasons are c) The ceiling of a long hall is 25m correct. Physics. high.050 N? [March 2014] horizontal range covered by the athlete. A woman rides a bicycle with a speed of 12 m/s in the east to b) What are orthogonal unit vectors? west direction. What is the direction in which she should hold her c) What is zero vector? Give its umbrella? (3) significance in Physics with an example. Find. Why? [Imp-2013] mv 2 motion is given by F . but reasons 13. a) Find whether the given vectors B? (1) 2iˆ 3 ˆj 4kˆ and 4iˆ 6 ˆj 8kˆ are parallel b) Rain is falling vertically with a speed or not. (1+ 1+ 1) r 11. b) Using the above formula. c) Determine the value of Saju K John M. (1) 12B. c) Assertion: the range of a projectile remains the same for the angle of OR projection 300 and 600. can attain the maximum range. c) What is the number of significant b) Obtain an expression to calculate the figures in 0. a) Write the dimension of force. what is the angle between the two vectors? a) Name the path followed by the stone. magnitude and direction of the resultant of two forces: D: Assertion is wrong. [March 2013] a) What is the velocity of A relative to 12A. will be the angular speed averaged over the total time? a) Force c) Obtain the expression for centripetal b) Angular momentum acceleration (ac) in terms of angular c) Time speed ( ). (d) If 1 = 300. what are the revolution? vertical and horizontal components of velocity? c) Derive an expression for the maximum height reached by the ball. dimensions is found to have acceleration in a) If you start moving with 1ms-1 due one dimension.4sec. you hold in 2s. ground. magnitude and direction is a vector and if has b) If the insect travels only magnitude it is a scalar. c) In the figure. Ramesh observes the motion of an insect reach the earth’s surface is ‘6’ in a circle. east. A food packet is dropped from a plane c) After ‘t’ seconds what will be the flying horizontally. [March 2010] d) Work [Imp-2011] 17. Doctoral Research Fellow at NIT Calicut Page10 . A boy throws a cricket ball with a velocity of radius ‘R’ is in contact with the u at an angle with the horizontal. magnitude and direction of the resultant velocity? a) Sketch the path of the falling food [ Imp – 2010] packet. Imagine yourself in a rain steadily falling dimensional motion. in which direction should you a) Identify the motion. what vectors. Physics. (Take g = 10m/s2) [Imp-2011] a) Find the angular velocity of the 16. when the wheel rolls a half b) At the highest point. a) What are the magnitudes of the vertical and horizontal components of velocity? [March 2012] b) How do these components change with time? 15.Sc. [March 2012] attained by the ball above the point of projection? (Take g = ms-2). A physical quantity having both insect. what is the value of 2? [March – 2011] 18. +1 Physics Previous (2009-2016) Questions Chapter Wise A B A B . 20. calculate the height from in an anticlockwise direction for a time of which the packet is dropped. A body moving in two vertically with a speed of 2ms-1. 31. NET. If you run at Saju K John M. What is the displacement of a) Name the path followed by the ball. He finds that it travels 6 revolutions seconds. the point ‘P’ on a wheel 14. Motion along a plane is called two. Categories the 4 revolutions in the clockwise following physical quantities into scalars and direction for a time of 8. the point.6sec. hold the umbrella to protect yourself b) A ball thrown by a player reaches from the rain? another player reaches another player b) On a sunny day at 12 noon. b) If the time taken by the packet to 19. A stone is thrown up with the velocity u which makes an angle with the horizontal. What is the maximum height the umbrella vertically. between A and B ? c) Calculate the permissible speed of the car b) Find the value of A . if the coefficient of friction is 0. (1) of velocity? c) Derive the expressions for ‘time of 3. [SEPT-2016] c) A ball trapped in a circular path of 2. A circular track of radius 400m is kept flight” and ‘horizontal range’ of the with outer edge raised to make 5 degrees with ball. relationship between linear and angular (2) accelerations. A and B are two non-zero vectors. a) A body. (2) velocity ‘u’ at an angle ‘0’ with the horizontal. a boy throws a cricket ball with a basis of second law of motion. The given graph ABCD shows variation magnitude of the resultant of these of force with time for a body placed on a two vectors in terms of their smooth horizontal surface. the horizontal. Doctoral Research Fellow at NIT Calicut Page11 . magnitudes and the angle between them. [March 2016] 10 revolutions in 100 seconds. NET. is because of the centripetal acceleration of the body. c) State true or false. moving along a circle has 1. [MARCH-2009] Saju K John M. c) The parallelogram law is used to find [Imp-2013] the resultant of two vectors. An iron ball and a wooden ball of the a) What is the path followed by the ball? same radius are released from a height b) At the highest point. what are the in vacuum. the radius 10 cm moves steadily and completes rider fails backward. what is the angle permissible speed considering the force of friction. +1 Physics Previous (2009-2016) Questions Chapter Wise certain speed. What is the a) Name and state the law used to angular velocity and what is the linear explain the above situation. Find the 4. B . A person drives a car along a circular uniform speed but the velocity is varying. b) Why do we give banking to curved roads? (1) b) Find the angular velocities of the minute and second hands of a clock. This track on a level ground.Sc. [March 2010] Laws of Motion 21. A B . find the maximum safe speed of the car. From the relationship between a) Derive an expression for the linear and angular velocities.2. do you need to incline Chapter -5 the umbrella? Justify your answer. b) Obtain an expression for the maximum a) If A B = A . (2) velocity of its motion? Is the acceleration b) State the law of conservation of vector is a constant vector? [ Imp – 2009] linear momentum and prove it on the 22A. Physics. the iron ball will reach the vertical and horizontal components ground first. When a horse suddenly starts moving. (1+3+2) OR a) What do you call this type of construction of tracks? 22B. Which of them has 2 linear reaction greater kinetic energy? Justify. yet they do not cancel each other. (1) momentum Newton’s third Law of inertia [March 2015] 3 law Impulse Momentum 6. (2) [March 2014] ii. Maximum permissible speed to avoid its weight. opposes the relative motion between two b) Using the above law. (1) momentum (1) [Imp 2015] c) A circular racetrack of radius 300 m is banked at an angle of 150 . speed on a banked road without considering i) The force acting on a body along friction. Law of conservation of linear for the given graph. (2) motion. wheels of a race car and the road is (2) 0. (2) principle iv) Draw a momentum time graph ii. Sl A B b) State Newton’s second law and arrive No at the equation of force. a) State the following statements are True coefficient of friction between the or False. Match the following. Why? [Imp-2014] (1 + 1) a) Name the law that helps to measure 7. (2+ 1+ 3) expression for force. (1) iii) Find the region on the graph at b) Using the above law. (2) Newton’s first Change in 1 law momentum c) A motorcycle and a bus are moving Conservation of Action with same momentum. The 5. linear momentum. b) i) State the law of conservation of a) State Newton’s second law of motion. then the change in 9. explain: which the body moves with i. state whether the c) Obtain an expression for maximum following statements are true or false. momentum.Sc. Momentum after collision a) Give the significance of Newton’s [March-2013] first law. deduce an surfaces in contact. We are familiar with Newton’s laws of CD is zero. slipping. If the same force is applied on two bodies of different masses for the same time. Find: i. a) Friction is a necessary evil. [Imp-2014] AB is constant. The optimum speed of the race car to i. Physics. A spring balance gives the mass of a avoid wear and tear on its tyres. (1) body while a common balance gives ii. Correct the statements if false.2. b) What is meant by banking of roads? Saju K John M. momentum of two bodies is the same. Newton formulated the famous laws of 4 before collision= motion. Friction is defined as the force which force. b) Action and reaction are equal and the force depends on the rate of change of opposite. +1 Physics Previous (2009-2016) Questions Chapter Wise a) Using the given graph. 10A) According to Newton’s law of motion. NET. Doctoral Research Fellow at NIT Calicut Page12 . Explain. ii) The force acting on a body along 8. Impulse – momentum constant momentum. 12. b) A cricketer moves his hands b) Give the expression for the maximum backwards while holding a catch.Sc. the various forces acting on it. Friction is a force acting between two centric petal force for a car taking the circular surfaces in contact. 16. [Imp-2011] a) Which force provides the necessary 15. Yet they do not cancel each vehicle on a banked road and mark other. A thief jumps from the top of a house with b) The force is increased suddenly? a box of weight 25kg. A stone breaks the window glass into c) Using the data provided in this case. Doctoral Research Fellow at NIT Calicut Page13 . According to Newton’s law of motion. (1+ 2) do in order to land safely. A block of mass ‘M’ is suspended by a momentum. [Imp-2011] little above the inner edge is called banking of curves. the [Imp-2011] force depends on the rate of change of 18. Raising the outer edge of a curved road a your answer. attached to the bottom b) What happens to the linear of the block as shown.25 ). the dun falls with his head forward. What will be the b) Name the process by which the outer direction of frictional force acting between the side of a curved track is raised a little above road and tyre? (1) [Imp-2011] the inner side. Give reason. 17. allowed speed of a vehicle on a [Imp-2012] banked road with friction. light cord ‘C’ from the ceiling and another a) State whether the force is external or strong cord ‘D’ is internal? Justify your answer. d) Why is it more difficult to rotate a The cord ‘D’ is pulled by a force ‘F’. Consider a car moving over a horizontal road. a) State the principle behind it. What should he is moved in the backward direction. 10B) The outer side of a circular track of b) Prove the principle using Newton’s radius 200 m is raised to make an angle of 150 second law of motion. Saju K John M. Write the reason for the following: can take the curve. +1 Physics Previous (2009-2016) Questions Chapter Wise c) A man jumping out of a moving bus 14. on his head. if a shorter string? [March 2012] a) The force is increased steadily? 13. with the horizontal. Which stone by tying it to a longer string than of these cords will break. (1+ 1) a) Action and reaction are equal and a) Sketch the schematic diagram of a opposite. momentum when the force is absent? c) The motion of a particle of mass m is 1 2 described y ut gt . find the 2 force acting on the particle. Physics. What [March – 2011] will be the weight of the box experienced by the thief during his downward fall? Justify 19. NET. pieces while a bullet almost pierces through determine the maximum permissible speed to the same. Banking of road helps to increase the [March-2013] centripetal force and there by increases the limit of maximum speed of a vehicle w2ith it 11.wt. when there is a relative track? motion between them. (1) [Imp-2011] avoid skidding (given s = 0. When a short is fired from a gun. The lift moves up with a between the tyres and the road. b) Why are passengers thrown forward when a speeding bus stops suddenly? a) Name the energy possessed by the [March 2010] body at maximum height. (1) 21. A child is sitting inside a lift in a multi.Sc.8 m/s2 energy during its free fall under the gravity... The constant acceleration? person can hold the gun with a maximum force of 144 N. constant speed? b) A machine gun fires bullets of mass ii. what will be the apparent weight this. There are different types of forces in nature. He can get himself to the edge ii.. Doctoral Research Fellow at NIT Calicut Page14 . a) State the work energy theorem. Energy and Power speed of the vehicle on the banked road. Descending with a uniform of the slab by spitting or blowing air in the acceleration. A man is standing at the centre of a large i. [ Imp – 2010] 1. Write an equation for it. A passenger of mass 30 kg is standing in b) Show that the potential energy of a a lift which is moving vertically downwards body is completely converted into kinetic with an acceleration of 1. We learnt their effects and [SEPT-2016] applications. 2. flat slab of ice. ascending. Give the exact reasons for the following... stone of mass 20 kg to the top of a Saju K John M. The b) What will be the effect if the cable is work done by him is .. NET... The lift moves up with a 40 g each with a speed of 1200 ms-1. [MARCH-2009] empty space. forward direction (assuming the ice to be c)If the child weighs 20kg and if the lift is frictionless) moving down with a uniform acceleration a) Name the principle/law involved in of 5ms -2... cut and the lift falls freely? (i) negative (ii) zero [March 2010] (iii) positive (iv) unpredictable (1) 22. Physics. Chapter -6 Neglecting frictional force obtain the expression for the maximum safe Work. (2) a) Will the passenger experience decease or an increase in his weight/ c) A man carefully brings down a glass Explain? sheet from a height 2 m to the ground. Force is required to lift a body from the ground to a height h and work is measured a) Why can’t a horse pull a cart in empty as the product of force and magnitude of space? displacement.. +1 Physics Previous (2009-2016) Questions Chapter Wise a) Derive an expression for the safe a) What will happen to the weight of the speed with which a car can negotiate a banked child if? road by taking into account the friction i... b) A man of mass 60 kg carries a storeyed building.. What is the maximum number b) Write down expressions for the of bullets that can be fired per second from the apparent weight felt by the child when the gun? [March – 2011] lift is: 20. Why? c) With the help of a free body diagram represent the various forces acting on a vehicle moving on a banked road. (2) 23.. of the child? b) A horse cannot pull a cart and run in (g = 10ms-2).. Calculate the total energy collision they could move together. The figure shows a body of mass m placed b) Show that in a perfectly elastic at a height h.(v1 – v2). The tank is 40 m above the ground and the graph shows the force on the body efficiency of the pump is 30%. (1) [March 2016] (elastic.u2 ) = . Let them undergo one-dimensional this body at a height h? (1) collision and retrieve each other with velocities v1 and v2.... Several such as billiards. after 50m. From the table given below: displacement gives work. It can be negative. (2) c) Suggest any two situations in which c) A pump on the ground floor of a the work done by a force is zero. Find the Show that (u1 . negative... It loses 25% of its kinetic energy on striking the ground. Physics.. (3) [Imp-2014] 4A..e. inelastic. before and after collision.... B and C are the three points collision in one dimension. their relative (2) [Imp 2015] velocities are equal. infinity) a) Draw the force –displacement graph. marbles. with respect to frictional force.. positive. velocity after collision is equal to relative velocity before collision. +1 Physics Previous (2009-2016) Questions Chapter Wise multi-storeyed building of height a) When two object collide. NET. Below figure represents two point masses. Saju K John M. zero or positive.. building can pump water to fill a tank d) A ball is pushed with a force of 3N for of volume 30 m3 in 15 minutes. If the 2s along a frictionless track. b) Prove that total mechanical energy is conserved at B and C. completely elastic. The scalar product of force and 6.. munch electric power is consumed by the pump? (2) OR 4B. (1) b) How can you find the work done from b) State and prove the work energy the above graph? theorem for constant force. (zero.. spent by him? (9. height at which the kinetic energy of the body becomes half of the original value. i. relative on the trajectory of this body. A.Sc. how against time. m1 and m2 approaching each other with speeds a) Which is the type of energy possessed by u1 and u2. completely inelastic) 3.8m/s2 ) (2) the collision is. (2) c) A ball at rest is dropped from a height of 12 m. (2) [March 2015] 5. Doctoral Research Fellow at NIT Calicut Page15 . Force(N) 2 4 6 8 10 a) The work done in sliding a load is Displacement(M) 1 2 3 4 5 .. (2) c) A body of mass 5kg is thrown vertically up with a kinetic energy of 490 J. or caroms involve collisions. Find the height at which it bounces. . what conservation of energy for a freely falling body. Kinetic 1 energy E mv 2 2 b) State work energy theorem...S quantity b) Mass.. freely Its velocity reduces to 100m/s. c)Mass=10k Accelera Force=10N g tion c) A bullet of mass 10g and velocity 800 m/s d)Lift falls a=g R=. 746watt the height of the body. PE=…….... a) State and explain the work done in the following situations: [Imp-2011] i) A person carrying a heavy load walks 14. F... Saju K John M.Sc.. Doctoral Research Fellow at NIT Calicut Page16 . 9... Physics... [March 2012] mass... A car is moving with a constant speed on straight line a) water Potential . 8. 10.. Prove this statement.... Find the [March 2012] average resistance offered by the mud wall.... The work product done by a force is the product of displacement [March2013] and the component of force in the direction of displacement. 15.. [March-2013] a) Draw the force-displacement graph. Work is required to lift a body through a (1+2+3) [Imp-2013] height from the ground....... height ‘h’ near the surface of the earth in a time ‘t’. A force is required to do work. power e) Body of At a height... Neglecting the air resistance prove that the total mechanical energy of the ii) A man spending his energy by body remains constant throughout the fall.. a) State and prove that the law of b) If ‘A’ is the area of the graph.. NET.. Ramesh lifts a body of mass ‘m’ to a Find the work done on the body. m h f) Power.. +1 Physics Previous (2009-2016) Questions Chapter Wise How much work is done by the force? [Imp-2012] (1+ 1+ 1+ 2) [March 2014] 11..... Scalar m above the ground. stored in a energy a) What is the network done by the external dam force on the car? b) .. Momentum Energy falling body......... Fill in the blanks: 7... A quantity does indicate? t b) Draw graphically the variation of [March – 2011] kinetic energy and potential energy with the height of the body in the above case.... [Imp-2011] b) A constant force of 200 N displaces a body through 5m in the direction of the force. collision conserved conserved c) Draw the variation of KE and PE with d) Unit of . Consider a body falling freely through the on a level road. m Momentum. b) State and prove the law of m conservation of energy of a freely c) . atmosphere. Fill in the blanks. KE=.... p P=..... 12... Scalar 13.. pushing on a concrete wall. is passed through a mud wall of thickness 1 m.. a) Calculate the work done in lifting a body of mass 10 kg to a height of 10 a) .......... c) Show that the total mechanical energy of a freely falling body is conserved. doubled. times heavier than an electron? a) State the work-energy theorem. According to the work-energy theorem. a) State work-energy theorem. Calculate the Explain. 21. is the external work done by him? b) Suggest two conditions for the work a) A lorry and a car moving with a same done by a force to be zero. along a straight line.E and P. It is found that the two energy? plates. [ Imp – 2010] 18. What change in its kinetic energy. How high does body. Physics. what is the percentage [March 2010] change in its linear momentum? 20.Sc. work done by the net force to displace b) If the kinetic energy of a body is from x =0 to x = 2 m. Work is related to force and displacement c) State and prove the law of over which it acts. [March – 2011] b) Prove work-energy principle for a 17. with the height of the of equal mass at rest. ? and the sizes of the bobs are negligible. [MARCH-2009] Saju K John M. Which of them will straight line with a velocity v kx 2 come to a rest in a shorter distance? where k = 5 SI units. +1 Physics Previous (2009-2016) Questions Chapter Wise 16. nucleus Find the percentage loss of the initial velocity of the bullet when it is between the plates. NET. Let the body be dropped momentums if the proton is 1830 from the height ‘h’.) [March 2010] ii) The maximum K. How does it get this kinetic kilograms as in figure. a) What is the work done by the c) A bullet of mass 20g pierces through a centripetal force on the ball? plate of mass 1 kilogram and then comes to b) An arrow shot from a bow has kinetic rest inside a second plate of mass 2. Collision between two particles need not be the physical contact of two particles as in the case of scattering of the -particle by a Initially at rest. the variation of 300 to the vertical hits on another bob K. Doctoral Research Fellow at NIT Calicut Page17 . Where do you find: the first bob rise after the collision? (Assume that the collision is elastic i ) The maximum P. kinetic energy are stopped by c) A body of mass 1 kg travels in a applying breaks which provides the 3 same retardation. c) The bob of a pendulum released from b) Draw graphically. a) What is the quantity that remains conserved in all types of collisions? [ Imp – 2009] b) Suppose an electron and a proton are projected with equal kinetic energy. A ball moves along a circle under the particle moving with a constant acceleration influence of centripetal force. a) A man tries to pull a rigid wall for a work done by a force on a body is equal to long time but fails to displace it.E. now move with equal velocity.98 energy. conservation of energy in this case.E.E. Work is required to be done to lift a body what will be the ratio of their linear from the ground.? 19. ... two seconds. (1) [March 2016] System of particles and 3A.. The Saju K John M. (1) i) ii) iii) n iv) n 2 [SEPT-2016] n n2 2... (1) an angular velocity of 10 rad/s in b) A coin is rolling on a plane surface. a) Classical dancers bring their hands closer to their body to rotate faster. mass of this system? Derive an expression for its total kinetic energy.... (1) 1 iii) 3MR 2 iv) MR 2 (1) OR 4 1B..... (1) r and F is. mass M and radius R are placed perpendicular (1) to each other.. The rotational analogue of force is 4.. Name b) Two identical concentric rings each of the principle employed by them.. 3B... What is the moment of inertia about an axis passing through the centre of b) A wheel rolls along a straight line..... analogue of mass in linear dynamics. State a) Name the theorem that helps to find the law of conservation of angular the moment of inertia about a tangent momentum.. a) Derive the mathematical relation 2 between angular momentum and torque.. (4) parallel to the diameter.. Physics.... The moment of inertia What fraction of its total kinetic of the wheel is 0. parallel to n the diameter of the ring.Sc.... (3) 3 i) MR 2 ii) 2MR 2 c) The rotational analogue of force is 2 . +1 Physics Previous (2009-2016) Questions Chapter Wise Chapter -7 you just begin to climb. b) A solid sphere is rotating about a (1) diameter at an angular velocity ω. Moment of inertia about a diameter of OR MR 2 a ring is I 0 . Explain why.. Write the equation of the moment of inertia of a disc a) The turning effect of force is about an axis passing through its centre and maximum when the angle between perpendicular to its plane. (3) [March 2015] c) The possibility of falling backward with the ladder is more when you 5. (4) 1A..... Use Rotational Motion this theorem to find the moment of inertia of a ring about its diameter. Doctoral Research Fellow at NIT Calicut Page18 .... (1) a) State the parallel axis theorem of b) A wheel starting from rest acquires moment of inertia.4 kg m2..... its angular velocity becomes…… (1) c) The rotational analogue of mass is [Imp 2015] . a) State perpendicular axis theorem. NET.. If it cools b) Draw a diagram and find the moment 1 so that the radius reduces to of its original of inertia about a tangent.. Moments of inertia of a ring about an axis are high up on the ladder than when passing through the centre is MR2. also called torque. (3) value. Moment of inertia is the rotational moment of force. Calculate energy is rotational? (2) the torque acting on it... [March 2014] 7. Moment of inertia is the analogue of mass b) Explain the practical example (shown in the in rotational motion. it is not fig) based on the law mentioned in (a) a fixed quantity. keeping the ring in the vertical position a) State the perpendicular axis theorem. find the its axis with an angular speed of 100 rad s-1. In an experiment with found using the perpendicular axis theorem.25m. (1+2+2) c) How will you distinguish a hard-boiled egg a) State the theorem which will help and a raw egg by spinning each on a table top? you to find the moment of inertia about its diameter. A solid sphere of mass ‘m’ and radius ’r’ ground. NET. the magnitude of angular momentum of the c) A rolls down the inclined plane cylinder about its axis? [March 2013] without slipping. a bicycle rim. (1+ 2) When string B is released. the rim keeps rotating in a vertical plane and the [Imp-2014] plane of rotation turns around the string A. Doctoral Research Fellow at NIT Calicut Page19 . of inertia of a ring about its diameter. Why? b) Write any two factors on which the moment of inertia of a rigid body depends.Sc. Which one has a greater kinetic energy? Explain. with both the strings in one hand. put the wheel in b) Obtain the expression for the moment fast rotation (see fig). a) Mention the law that explains the above result. moment of inertia of the ring about The radius of the cylinder is 0. [Imp-2013] starts from rest and rolls down along an inclined plane as shown. Physics. +1 Physics Previous (2009-2016) Questions Chapter Wise moment of inertia about a diameter can be 8. Find the velocity of the ring when it reaches the 9. A thin circular ring is rotating about an axis. (1+2+2) a) Moment of inertia can be regarded as a measure of rotational inertia. Saju K John M. d) A solid cylinder of mass 20kg rotates about b) Using this theorem. What is its diameter. c) The moments of inertia of two rotating bodies A and B are IA and IB (IA > IB) and their angular momentum are equal. 6. But unlike mass. m. chain. assuming the mass to be concentrated at the rim of the wheel? b) Show that the disc has the moment of MR 2 [March – 2011] inertia I about an axis perpendicular 2 13. 11. Physics.Sc. a) A body rolls over a horizontal. smooth of inertia of the sphere about its axis surface without slipping with a translational passing through the centre. kinetic energy E. The moment of inertia of a uniform thin to the disc at its centre.p. Rotational inertia is the tendency of a kinetic energy of a circular disc. Consider the sphere as a c) If the moment of inertia of a disc point mass. Using the above relation. 4 radius of the disc. rotating body to resist any change in its state of rotational motion. circular disc about a diametric axis of the disc c) The figure shows two different MR 2 is where M is the mass and R is the spinning poses of a ballet dancer. In a hammer throw event. +1 Physics Previous (2009-2016) Questions Chapter Wise a) Write an expression for the moment 12. find the total 10.15kg and your answer. Determine its T ’ is the torque. MR 2 b) If ‘L’ is the angular momentum and ‘ is (M is the mass of the disc 2 dL and R is radius). Moment of inertia plays the same roll in Calculate its angular momentum. dancer have less angular velocity? Justify c) A circular disc of mass 0. show that T . throws the sphere. What is the a) What you mean by the radius of constant torque required to stop the wheel in gyration of a rolling body? 14 rotations. where K is the R2 c) Find the velocity when it reaches the ground. about an axis passing through its a) Find the moment of inertia about the centre and perpendicular to its plane axis of rotation. b) A wheel of mass 1000 kg and radius 1 m is rotating at the rate of 420 r. [Imp-2011] Saju K John M. Doctoral Research Fellow at NIT Calicut Page20 . dt moment of inertia about a diameter and about a tangent. NET. a solid sphere a) State the parallel axes theorem on of mass 16 kg is tied to a light 50 cm long moment of inertia. Give the statement of this theorem. A sportsman gives to it a constant b) Write the relation between moment of moment of 30 N-m for 10 seconds and then inertia and angular momentum. The moment of inertia of a body changes [ Imp – 2010] when the axis of rotation changes. b) Using the theorem find the moment of inertia of the disc about a tangential In which spinning pose does the ballet axis in the plane of the disc. [Imp-2012] radius of gyration and R is the radius of the body. rotational motion as mass in linear motion. a) There is a theorem which helps to find the moment of inertia of the disc about another axis parallel to this axis.1 m makes 120 revolutions in one minute about its own axis. 14A. [March 2012] radius0. Show that the kinetic energy b) Why moment of inertia is also called K2 as rotational inertia? of the body is E 1 . Physics. (Law of areas). a ring and a circular disc b) If the angular speed is increased to of identical radii are rolling down an inclined 100 revolutions / minute. a) Moment of inertia of a particle is a 2 measure of its rotational inertia. Remya stands at the centre of a turn. The acceleration due to gravity may b) If the acceleration of a rolling body vary with altitude and depth. The moment about an axis passing through its edge of inertia of a system will be the sum of the and parallel to its diameter.K is the radius OR gyration.find the acceleration of a 1 K / R 2 constant. What will be the Moment of inertia of c) Escape the velocity of a planet is 20 the system? Km/s. The acceleration of a disc of radius R and mass M. 2A. moment of inertia of the components c) A ring of radius 2 m weighs 100 kg. A solid sphere. what will be plane without slipping from the same height. It rolls along a horizontal floor so that Find the moment of inertia of a thin meter its centre of mass has a speed of 20 scale about a perpendicular axis through the cms-1. [MARCH-2009] b) Find the moment of inertia of a thin circular disc of mass m and radius R about one of its diameters. Take M as the mass of the scale. the new moment of inertia? starting from rest. c) Using the above equation find the table with her two arms outstretched. Chapter -8 c) If a Gravitation student fixes two such discs 1. sphere of mass M and radius R. through an inclined plane is given by a = Saju K John M. NET. What is its total kinetic energy? centre. (2) 15B. which will reach down first? Give the reason.Sc. the meter scale and rotates the system about an axis b) Derive an equation for the orbital perpendicular to the length of the scale as in velocity of a satellite. [ Imp – 2009] a) What will happen to the moment of inertia if she folds her hands back? 16. Doctoral Research Fellow at NIT Calicut Page21 . a) Explain the term radius of gyration of [SEPT-2016] a body. c) Write the expression for the a) i) Which will reach the bottom first? rotational kinetic energy of the b) ii) The moment of inertia of a disc system and explain the terms about an axis passing through its involved in it. (2) figure. a) State Kepler’s second law of planetary at the ends of motion. down simultaneously. translated to the particular axis mentioned. +1 Physics Previous (2009-2016) Questions Chapter Wise c) Write an example for the motion in g sin which an angular momentum remains 2 . 14B. Find the orbital velocity of the OR smallest possible orbit. table with an angular speed of 40 revolutions If a student allows the sphere and disc to roll / minute. centre and perpendicular to its plane [March 2010] MR 2 is . Find its moment of inertia 15A. The velocity of a satellite in its orbit is a) Name the minimum velocity. Out earth has several artificial satellites. NET. (h<< RE) (2) a) Kepler’s laws i) Scalar b) Why does satellite need no fuel to b) Gravitational ii) Planetary motion go around a planet in its fixed orbit? constant c) Acceleration due to gravity is c) Velocity iii) Inertia independent of . Match the following ( 6 x ½ = 3) acceleration due to gravity at a height h. (mass of d) Newton’s first iv) 9.. (1) gravity at a depth ‘d’. For a particle to overcome the Nm2kg-2 gravitational pull of earth.67 10-11 2B. Give reason. [March 2014] 4.. b) Obtain an expression for the above minimum velocity. (1+1) a) i) Name the velocity (1) a) Escape velocity is independent of the ii) Derive an expression for this mass of the earth / the mass of the velocity (2) body.3 days. OR (Gravitational constant g=6... around the earth.. 8A. (2) a) Find the relation between orbital c) A ball bounces more on the surface velocity and escape velocity.. b) Obtain an equation for the variation of ‘g’ with height Saju K John M. Earth satellites are objects which revolve But the moon is the only natural satellite. 6. Choose the correct alternative. [Imp 2015] 7. Consider a satellite at a height ‘h’ from the surface of the earth a) If acceleration due to gravity at the surface of earth is ‘g’. Physics. (2) is 3. +1 Physics Previous (2009-2016) Questions Chapter Wise a) Arrive at an expression for 5.8 ms-2 earth / mass of body) (2 +1) law of motion [March 2016] e) Acceleration due v) [LT-1] OR to gravity f) Distance vi) 6... in an artificial satellite? (1) a) Write the relation between [March 2015] acceleration due to gravity and gravitational constant. arrive at the a) Give an equation for its orbital expression for acceleration due to velocity.Sc.. b) The moon does not have an b) Gravitational force / weak nuclear atmosphere around it. of the moon than on the earth. (1) Obtain the mass of the earth... it should be projected with a minimum velocity.84 x 108 m and the time period of c) Distinguish between geo stationary the moon’s revolution is 27. force is the weakest fundamental (2) force. Doctoral Research Fellow at NIT Calicut Page22 . it is projected with [Imp-2014] a minimum velocity. The value of acceleration due to gravity is c) How do you explain weightlessness maximum on the surface of the earth. b) What is a geostationary satellite? Explain why. (1) called orbital velocity. (2) [March 2016] c) Moon has no atmosphere... (2) b) Obtain an equation for the period of b) Distance to the moon from the earth the above satellite.67 x 10-11 Nm2kg-2.. Why? 3.) (2) 8B. For a body to leave from earth’s (2+ 1+ 1) [Imp-2014] gravitational field. satellites and polar satellites.. surface of the earth. Equator (1+3+2) [Imp-2013] iii... a) The value of acceleration due to gravity is maximum at the. Poles ii.8m/s2. State whether the b) Arrive at an expression for the escape speed velocity is the same or different in projecting from the earth. +1 Physics Previous (2009-2016) Questions Chapter Wise c) Draw a graph showing the variation 10B. Center of the earth 10A.. to g/2.. NET. Doctoral Research Fellow at NIT Calicut Page23 . Match the following: above velocity. 13.. For a particle to leave from the earth’s at a depth ‘d’ below the surface of earth. If the radius of the shell is R. c) For an earth satellite show that.. [March 2013] b) Obtain the expression for the 11.... [March 2012] c) Explain whether the escape speed depends 14. a) What is mean by escape speed? c) A rat and a horse are to be projected from earth into space. each animal. (1+ 2+ 1) [March 2014] b) Derive an expression for the variation of g 9A. The acceleration due to gravity (g) on the of ‘g’ with depth and height from the surface of the earth is 9.8m/s2 orbital velocity. the centre of a shell of uniform density having mass ‘M’. The escape speed for an object from the b) Find the height at which ‘g’ is reduced earth is 11.Sc. [March 2013] [Imp-2011] Saju K John M. it should be projected with a minimum c) At what height ‘h’ will the value of ‘g’ be velocity. a) Define acceleration due to gravity (g)... Give the reason. [Imp-2012] of (g) with height (h) above the surface of the earth. if [Imp-2012] this experiment is performed inside a satellite? 12. Nowadays we are familiar with satellites. Imagine a point mass ‘m’ maintained at on the mass of the object or not. shell on the point mass? Explain. Whether the Strong force Recoil of the gun velocities required for doing so are the same Kepler’s law Nuclear force or different? Justify your answer. a) Define the acceleration due to gravity (g). c) At what height ’h’ the value of ‘g’ will be half of that on the surface of the earth? i.. what d) The earth contains an atmosphere while the will be the gravitational force exerted by the moon does not. OR a) Name any two satellites.. 9B. (1+2+2+1) half of that on the surface of the earth? a) Name the velocity. Assume that the density of earth is constant.. field. Justify.. Escape Velocity = 2 Orbital b) Derive an expression for the variation Velocity. Circular motion Inertia Newton’s third law Gravitational force d) Find the period of a simple pendulum. Physics. Fundamental force Planetary motion c) An elephant and an ant are to be Newton’s first law Centripetal force projected from earth into space..2km/s. The acceleration due to gravity (g) on the b) Differentiate escape velocity from surface of the earth is 9. What is the percentage increase depends on mass of the body or not. [March – 2011] c) If the radius of earth suddenly 18. Explain this principle. If the rotational speed is increased? elliptical orbit. A person in an artificial satellite of the 20A. It is effect on the duration of the day? equal to the product of mass of the body and acceleration due to gravity. When we throw a stone into the air. [Imp-2011] water? [March 2010] 16. from the centre of the earth to the a) Explain the term escape velocity. But when we increase in terms of the mass of the earth. The earth revolves around the sun in an ii. the speed of the stone. [ Imp – 2009] a) Obtain an expression for the 21. what will increases. There are different types of forces in exerted by earth on it is known as acceleration nature. it acceleration due to gravity of a body comes back to the earth. When b) Keeping the mass of earth the same if the approaches the perihelion. a) The minimum velocity with which earth experiences weightlessness The moon is a body is to be projected so that it never a natural satellite of the earth. Give the exact reasons for the following. 4 % of its initial value. NET. Draw a graph 20B a) What will happen to acceleration showing the variation of ‘g’ with ‘r’. What will be the percentage of change in the escape velocity? Saju K John M. The mass of [ Imp – 2010] the earth remains unchanged. weight? Why? b) A satellite is revolving very close to b) Explain whether escape velocity earth. due to gravity [March – 2011] i. be the percentage change in acceleration due to gravity on the surface. Physics. +1 Physics Previous (2009-2016) Questions Chapter Wise 15. Arrive at an expression for escape velocity of a) Can a person on the moon experience earth. a) Why does earth impart same acceleration on all bodies? a) Why does a satellite revolve around b) Show graphically the variation of the earth in a circular path? strength with distance from the centre b) Why is it easy to lift a heavy stone in of the earth outwards.Sc. what will be its gravitational attraction experienced by it. weight of a body is the force of reduces to half its value. c) Acceleration due to gravity ‘g’ OR depends on the distance ‘r’ from the center of the earth. If the earth stops rotating 17. what change will What is its value on the surface of the you observe in the weight of the body earth? during that motion? (Neglect the b) The radius of the earth is reduced by effect of all other objects). Doctoral Research Fellow at NIT Calicut Page24 . The acceleration of a body due to the force 19. (1+ 2) applications. it may escape from the b) If you imagine the motion of a body gravitational attraction of the earth. in velocity needed to make it escape from the gravitational field of the c) Show how escape velocity and orbital earth? velocity are related. returns to earth is called the escape velocity. surface of the moon. its speed the diameter is shrinked by 1%. We learnt their effects and due to gravity. The closet approach of the earth with the sun is called perihelion. A rigid is a body with a perfectly 1. breadth b [SEPT-2016] and depth d is supported near its ends 2. (i) Poisson’s ratio a) What you mean by the centre of mass of a rigid body? (1) (ii) Young’s modulus (iii) Bulk modulus (iv) Rigidity modulus (1) b) State Hooke’s law.. derive Kepler’s third items its original length. it gets extended by an amount x as shown. modulus? Write a mathematical expression for it. NET.. (1) [March 2015] 6. +1 Physics Previous (2009-2016) Questions Chapter Wise c) Assuming that planets move in 4.. Write the expression for the amount of sagging. (2) [March 2016] 3. [Imp 2015] a) What do you mean by Young’s (a) Name the law relating stress and strain.. external force. (1) young’s modulus of material is 200 GPa. a) The ratio of shear stress to shear strain unchanging shape under the influence of an is .. wire when it is strained by 30%. The stress-strain graph for wires of two as shown in the figure. a) Which material is more ductile? (1) b) When a spring balances are continuously used for long time. (c) Which is more elastic.. Doctoral Research Fellow at NIT Calicut Page25 .. (1) b) Rop e of cranes is made of a Chapter -9 number of thin wires braided together. Given which shows more elasticity.. [March-2009] a) Draw the stress-strain graph of a rubber band. they show wrong reading. (2) (b) Calculate the stress developed in a metal b) Select the material from the table. Young’s moduli of three materials are given in the below table. A rubber band can be pulled to several circular orbits... Why? (1) [March 2015] Mechanical Properties of Solids 5. A load W is materials A and B are given below.. steel or rubber? Substance Young’s Modulus(N/m2) X 70 x 109 Why? (1+2+2) [Imp-2014] Y 120 x 109 Z 200 x 109 Saju K John M..Sc. law on planetary motion. Explain why.. When a force is applied to a spring.. Physics. (1) b) A rigid beam of length L. suspended at its centre of mass. Elastic limit ii. Which is more elastic? Justify your answer. [March 2012] 12. i. (1+ 2) a) State the law which relates stress with strain. [March-2013] 10. ion of the wire. c) State Hooke’s law.90 10 – 7 m2.Sc. Physics. What are the Young’s modulus and approximate yield 9. The graph below shows how the force b) Discuss the behaviour of wire at applied to a metal wire is related to the extent various stages. Determine the Young’s modulus Y of the material. Elasticity is the property of a body by which it regains its original state on the removal of the deforming force. [Imp-2011] a) Represent the variation of extension with load on a graph Saju K John M. Elastic region 8. NET. +1 Physics Previous (2009-2016) Questions Chapter Wise 7. Stress – Strain graph of two materials is c) If the young’s moduli of iron and glass show below: are 190 109 Nm-2 and 65 109 Nm-2 respectively. b) The wire has an unstretched length of 2.40 m and an area of cross section of Mark the following points: 3. When a mass is suspended on a metallic wire. the length of the wire increases slightly. a) Why Steel is more elastic than Rubber? b) Which materials is more ductile (A or B)? b) The figure given below shows the c) Which material is preferred for making stress-strain curve for a given springs (A or B)? Why? (1+1+1) [Imp-2013] material. ii) Fracture point (2 x ½ =1) b) Draw the stress – strain graph of a loading wire. a) Write the letter that corresponds to: a) Name and the state law that relates to the restring force developed in the wire and its i) Elastic limit deformation. Doctoral Research Fellow at NIT Calicut Page26 . When a wire is stretched with a very large force it breaks. steel or rubber? Why? [Imp-2012] 11. the relation between stress and strain for a given solid material under increasing tensile stress. Fracture point (2) [March 2014] iii. d) Which is more elastic. Plastic region iv. Hooke’s law states that stress strain. strength for this material? a) What is the necessary condition for the above law to be valid? b) Explain with the help of a graph. For which part of the above graph is this applicable. 3 m below the surface of a) Young’s modulus for a perfectly rigid water. (2) 1A. Modulus of elasticity of a material is the c) A tank of 5 m height is filled with ratio of stress and strain. (2) body is --------- b) One end of a rope of a length 4. Which is flow. Surface tension is a property of liquids 100 N jumps to catch the free end and and it causes capillary rise in small tubes. When the pressure on a sphere is increased Chapter -10 by 80 atmospheres. (4) 15. Elasticity is the property of matter that is c) Excess pressure inside a liquid drop characterized by atomic packing. (4) modulus of water is 2 x 109 Nm-2. A monkey weighing 1B. [ Imp – 2010] b) Draw a figure and derive an equation for capillary rise in a tube of radius ‘r’. 14. what are the various forces acting on it? Using Saju K John M.8 1011 a) What do you mean by surface tension? (1) N/ m2). air or water? Why? b) Draw a figure and drive Bernoulli’s [March – 2011] equation.5 m OR and diameter 6 mm is fixed to the branch of a tree. why? (2) formed in the shape of I? OR [March 2010] 2B. B and C is shown below. NET. Calculate the velocity of efflux through a hole.01%. Elasticity is an internal property of matter. Consider the flow of a liquid through a [Imp-2011] pipe of varying cross section. +1 Physics Previous (2009-2016) Questions Chapter Wise 13. (1) more elastic. Viscosity is the frictional force in fluids. For an is 60 N/m2. advisable to remove ink from c) Why are girders for supporting roofs fountain pen. Doctoral Research Fellow at NIT Calicut Page27 . What will be the excess elastic solid. The same radius formed by the same stress versus strain graph for three materials liquid? A. (4) 16. a) When a small metal ball is falling through a viscus medium. Find the bulk modulus of elasticity of Fluids the material of the sphere. it is its compressibility. (2) [SEPT-2016] 2A. B or principle. a) Write the equation of continuity of Fluids possess volume elasticity. [March 2016] C? Justify your answer. stays there. In case of fluids law of conservation of a) Which is energy can be explained with Bernoulli’s more elastic A. (Young’s modulus = 4. its volume decreases by 0. stress applied is directly pressure inside a liquid bubble of the proportional to the strain produced in it. a) State and prove Bernoulli’s b) If the bulk principle.Sc. Find the elongation of the rope. water. find b) While travelling in aeroplane. Physics. . (4) of a hydraulic lift. +1 Physics Previous (2009-2016) Questions Chapter Wise this arrive at an expression for and explain the principles of working terminal velocity. a) In the following figure. given diagram a) Name the liquid property for the and write its use. Define capillarity and arrive at the b) A steady flow of nonviscous liquids are expression for capillary rise in terms shown in ffigures 1 and 2. Law of conservation of energy is a b) What will happen to two soap bubbles universal law for all states of matter. (2) [March 2015] inside a liquid drop. Due to low surface tension. 5B.. Doctoral Research Fellow at NIT Calicut Page28 . The antiseptic used for cuts and wounds in human flesh have low surface tension. A liquid surface behaves like a stretched a) Identify the elastic membrane.. (1) b) Surface tension causes capillarity. water rises to a height. (4) 5A. (3) figures is INCORRECT? Why? (2) c) In a capillary tube. Physics. NET. What is its value for pure water with glass? b) State Pascal’s law for transmission of fluid pressure Saju K John M. a) State and prove Bernoulli’s theorem.. cross sectional area. If the capillary tube is inclined OR at an angle 600 with the vertical.. b) Define angle of contact. (2) (4) [Imp 2015] OR 4B. The pressure of the atmosphere at any liquid? point is the weight of the air column of a unit b) State and prove the above theorem. a) What is the SI unit of pressure? Derive will be the length of the water column a mathematical expression for excess pressure in the tube.. (3) b) Raindrops falling under gravity do not c) The above arrangement is placed in acquire very high velocity. What happens to the possible height of the liquid column 3A. they spread over the wounds easily. which are in contact with each other? a) Which theorem gives the law of Why? (2) conservation of energy for a flowing 4A. in the tube? Justify.. what 3B. (1+ 3) of radii. (1) above behaviour. Why? (2) an elevator which is accelerating [March 2016] upwards.. the angle of contact is. Which one of the of surface tension.Sc. OR Its unit is bar. (1+ 3+ 1) 9B. 9A.. A small water drop placed on a lotus leaf i.. +1 Physics Previous (2009-2016) Questions Chapter Wise c) Derive an expression for the rise of liquid in a capillary tube of radius r.. height of the water rise (h) in the tube. Fill in the blanks. that of B decreases ii.. There is always an excess of pressure equation [Speed of Efflux] (3) inside drops and bubbles.” height ‘h’ b) Obtain an expression for excess of pressure inside a drop of radius r and a) Name the surface tension S. c) Two soap bubbles A and B are blown b) Arrive at an expression for the at the ends of a tube. No change occurs in their Hydraulic lift: .. having density and surface tension S. phenomenon. The viscous force exists when there is a [March 2014] relative motion between the layers of the fluid.. if the tube is cut at level A? Justify your answer... Their sizes become equal 7A. will they sky diver is shown below. (1+ 3+ 1) 8. (1) Which part of the graph shows the sky diver (b) State the principle falling with terminal velocity? that explains your observation. Pick the odd one out from the following a) State true or false: “The viscosity of a) Atomiser b) Hydraulic Lift gases decreases with an increase in temperature. NET. as shown below. c) Will water overflow.. (1+3+1) [Imp-2013] Choose the correct answer: When the block C is removed..” c) Venturimeter d) Aerofoil (1) b) Obtain the expression for the terminal [Imp-2013] velocity attained by an object falling through a viscous medium. 10. [Imp-2014] 6. [March 2014] sizes iv. The size of B increases and a) Define surface tension. During the attract or repel? fall he opens his parachute.. Doctoral Research Fellow at NIT Calicut Page29 . (a) When air is blown in between the c) The speed – time graph of a falling two balls... When a thin tube is a) State true or false: “A drop of liquid dipped in water.. (1) OR (c) Using this principle... The size of A increases and is spherical in shape. water under no external forces is always rises in the tube through a spherical in shape.... derive Torricelli’s 7B.. that of A decreases Saju K John M. Physics. (1) Venturimeter: Bernoulli’s theorem iii.Sc.. [Imp-2012] manometers measuring the pressure. d) a 1 v 1 a 2 v 2 Viscosity d) Pick the odd one out.0 mm falling through a tank of oil at 200 C is 6... b) State the law associated with liquid pressure. c) Briefly explain the working of hydraulic lift. Physics... [Imp-2012] 14. Explain why. Compute the viscosity of the oil at 200C. hydraulic Pressure press.5 103kgm-3 a) Differentiate between streamline flow and density of copper is 8. b) Magnus effect Surface tension c) Blood pressure in humans is greater at c) Action of Archimedes detergent principle the feet than at the brain.. known as capillarity. Density of oil is 1. Why? Saju K John M.. NET.. A.. +1 Physics Previous (2009-2016) Questions Chapter Wise b) Why does the small water drop acquire a b) What is the value of the angle of spherical shape? [March-2013] contact for pure water? c) Calculate the work done in breaking a 11.with temperature [March 2013] (increases/decreases).. The rise or fall of a liquid against temperature. [March 2013] 15.. scalar or vector. gravitational force through fine tubes is a) Hot soup is tastier than cold one.with b) State and prove Bernoulli’s principle. hydraulic brake. varying cross section is shown. venture meter. Match the following: [March 2012] a) Identity the above phenomenon.. Surface tension changes with 16A. whereas viscosity of liquids . The OR water levels in all the vessels remaining the same. Three vessels of different shapes are water drop of radius 1mm to 1000 filled with water to the same height ‘h’ and droplets. d) Viscosity of gases. a) Define the velocity of the raindrop when unbalanced force on it is zero. Doctoral Research Fellow at NIT Calicut Page30 .. b) Why do bubbles of air rise up through water? c) The terminal velocity of copper ball of radius 2.. Bernoulli’s principle Dentist chair. [March 2012] 13A.. temperature.9 turbulent flow.5cm s-1. 103kg m-3. a) Is pressure in a liquid. Surface tension of their bottom parts are connected to water = 72 x 10 -3N/m. The flow of an ideal fluid in a pipe of acquire high velocity. 13B. Raindrops falling due to gravity do not 12. A B a) Reynold’s Equation of b) Predict the pressure level shown by number continuity the manometers.Sc.. A solid sphere falling through a viscous explain this phenomenon. (Velocity of figure. above effect? Saju K John M.Sc. the lower disc DE instead of being Efflux) (2) [Imp-2011] blown off from BC. If air is blown through the space b) Use this principle to arrive at between two discs BC and DE shown in the Torricelli’s equation. Washing with water doesn’t remove rested on the surface of a liquid and is grease stains from clothes but addition of then raised. a) State the principle which is used to 17. required before the film breaks than it is after. Newton’s 19A. Why? a) State the principle that can explain your observation. Derive this law based on this continuity. Match the following behind this law. medium attains a constant velocity called b) A garden hose having an internal terminal velocity after some time of its diameter of 2 cm is connected to a fall. each 0. [ Imp – 2010] i. 1 1 PV PV 2 2 law of Quill tube A physical quantity called angle of contact motion determines whether a liquid will spread on the Boyle’s law F1 F2 surface of a solid or it will form droplets on it. Doctoral Research Fellow at NIT Calicut Page31 . An extra pulling force detergent removes the molecules of greasy equivalent to the weight of 3. principle. 1 1 A2U 2 Pascal’s law AU Rocket [March – 2011] propulsion. Venturimeter. a) Hydraulic lift is a device used to lift c) Show that the speed of liquid flowing heavy loads. Name this law and the principle 20. A1 A2 a) Define angle of contact.2 cm terminal velocity in terms of the in diameter. [March 2010] b) A wire ring of internal radius 3 cm is 21. Calculate the surface tension a) Which property of a liquid causes the of the liquid. b) Derive an expression for the capillary rise through a capillary tube. (1) height of a liquid in a narrow tube. will move towards BC. Equation of ii. When we below between two light balls suspended nearby they approach each other.03 g is substances. What are the different forces acting lawn sprinkler that consists of an on the sphere? Derive an expression for enclosure with 12 holes. NET. +1 Physics Previous (2009-2016) Questions Chapter Wise a) Give an example for capillarity from c) Derive an expression for the capillary practical life. Water does not wet the feathers of ducks. Physics. State the principle behind the out of a small hole in a tank filled with working of this device. has a speed does it leave the sprinkler [March – 2011] holes? 18. liquid will be 2gh where h is the b) The velocity of outflow of a liquid from height of liquid above the hole and g an open tank is identical to that of a freely is the acceleration due to gravity. If the water in the hose coefficient of viscosity of the medium. falling body. (1) 19B. (2) OR OR 16B. F ma Hydraulic lift. the d) Eight spherical rain drops of equal in temperature rises to 400C. Why? (1) c) Draw a neat diagram of an atomiser (spray gun) and explain the principle 4. The radius 1mm each. pressure. drop. 1. A hole is drilled in a copper sheet. pressure inside a rain drop. [ Imp – 2009] when the is heated to 2270 C? (2) 23. +1 Physics Previous (2009-2016) Questions Chapter Wise b) A single drop of liquid is split into 8 drops were to combine to from one identical drops. temperature of 200C. Express this temperature in Kelvin scale. b) How does sea breeze occur? Explain.55 What is the change in diameter of the hole N/m). 3. 1. But they reach ii) DE b) Sublimation q) Ice at the surface of the earth with a uniform c) Regelation r)Partially Solid velocity. A steel beam of length 5m is kept at a involved in its working. Rain drops are being accelerated while i) BC a) Melting p) Water falling through the atmosphere.24 cm at 270C. how the barometer reading will change.Sc. What is the change size are falling vertically through air in its length due to thermal expansion? (2) with a uniform speed of 1 ms-1. (2) [SEPT-2016] c) Calculate the amount of energy evolved when eight drops of mercury of 2.2 x 10-5/0C). What (Coefficient to linear expansion of steel is would be the uniform speed if these 1. NET. combine to form one diameter of the hole is 4. On a hot day.010C. c) Find an expression for pressure P at a depth h below the surface of a liquid of density ρ in a container moving vertically upwards with an acceleration f ? What happens (a) Match the following using the above to pressure for a free fall of the graph. [Imp barometer reading will change. Physics. and liquid d) Vapourisation s) Partially liquid a) What is this velocity called? and vapour b) Obtain an expression for the excess b) The slopes of AB and CD are different. [March 2015] Saju K John M. (2) container? [ Imp – 2009] Graph Process State 24. a) Explain the terms surface tension and surface energy. Mercury barometer is a device used to (Coefficient of linear expansion of copper = measure the atmospheric pressure. The below graph represents temperature falling freely under gravity. What will be the large spherical drop? excess pressure in each drop? [March-2009] c) How can the coefficient of viscosity of a highly viscous liquid the determined by Stokes method? Chapter -11 [March 2010] Thermal Properties of Matter 22. [March 2016] a) If a student places the barometer in a lift. how the versus heat for water at 1 atm. (surface tension of mercury is 0.7 10-5/0C). (1) b) Show that surface tension is numerically equal to surface energy. a) Triple point of water is 0. Doctoral Research Fellow at NIT Calicut Page32 . 2015] b) If the same barometer is placed in a lift that is ascending with an acceleration f. Thermal conductivity of brass = 109 Expansion ( ). [ Imp – 2010] 9. She kept it for 5 minutes and gave to transfer..Sc. Doctoral Research Fellow at NIT Calicut Page33 . linear expansion.15 ...000C .0 cm. Water kept in earthern pots gets cooled. Sitha prepared tea for her brother. Why? [March – 2011] iii) Radiation iv) None of these 12. It boils 6. What do you understand K by the term.60F.. possess the highest specific heat capacity? i. d) A brass boiler has a base area of 0..000F 4186J/kg/K. than a wooden tray on a chilly day. 212.... The increase in dimensions of a body due b) Explain briefly.. If the surrounding temperature is 200 C. (2) i) Conduction ii) Convection 11... How? [Imp-2012] 10-6/0C..0 kg/minute solids are mainly i) Coefficient of Linear when placed on a gas stove. Why? (1) [Imp-2013] 10. After preparing tea the temperature of the tea was 7. 459.. [March-2013] expansion... specific heat? c) A brass tumbler feels much colder Ice point ... Heat from the sun reaches earth through a) The ratio among the coefficients of vacuum.... If the gap b) Name the different modes of heat between steel rails 66m long is 3.. Js-1m-1K-1. (4 x ½ =2) a) Temperature of a normal human body is 98.00K . Silver Saju K John M.. NET. by which the sun heats the surface of the earth Calculate the time it takes to cool from 600 C is: to 300 C. the occurrence of a sea to increase in temperature is called thermal breeze based on heat transfer. Water ii... Estimate Expansion ( ) ii) Coefficient of Area the temperature of the part of the Expansion ( ) iii) Coefficient of Volume flame in contact with the boiler.. and ? (1) [March 2012] b) Invar is used for making pendulum of clocks. Temperature is the degree of ‘hotness ‘of 13.15m2 and thickness 1.63 transfer in metals and in liquids? cm 100 C. What is the corresponding temperature shown in the Celsius Temperature Kelvin Celsius Fahrenh- scale? scale scale eit scale b) Specific heat capacity of water is Steam point 373. Heat of vaporization of water = 2256 103J kg-1. 8. her brother when the temperature reached 500 a) The main mode of transmission of heat C. allow for expansion. Complete the table. area expansion and volume expansion is ------- a) Name the mode of heat transfer in the c) Railway lines are laid with gaps to above case.. then at what temperature c) Aquatic animals are protected in cold will the lines just touch? Coefficient countries as ice is formed on the of linear expansion for steel is 11 surface of river.... 0. Physics.. The coefficient of thermal expansion in water at the rate of 6. There are three distinct modes of heat 800 C. +1 Physics Previous (2009-2016) Questions Chapter Wise 5. a) Which among the following the body..690F Why? Absolute zero 0. a) What is the ratio of . . [March 2010] b) Explain Carnot’s cycle.. c) Read the statement given in a book Thermodynamics “All thermal conductors also. [ Imp – 2009] arrived. Find out the work done to [Imp 2015] convert 10 gram of ice at -50C to steam at 1000C. specific latent heat of fusion of ice is 336 103 J kg-1. Draw indicator diagram of b) When you are about to make tea from Carnot cycle.. (1) [SEPT-2016] 0. Specific heat capacity of ice is 2100 J Saju K John M. Do you add sugar in your friend’s coffee and then wait for him or do you add sugar after the arrives? Explain with respect to the concept Chapter -12 of cooling. Steel kg -1. a) At atmospheric pressure melting of ice c) Write the expression for the efficiency is 00 C. clarify it. (2) temperature. It has 4200 J kg -1 K-1. energy into . NET... a) What is the difference between you agree with this statement? If isothermal and adiabatic processes? (1) your answer is No. Also mention briefly why water convert. Mention two conditions under which real c) Explain the difference between heat and gases obey the ideal gas equation.. If the melting point of ice increases by of a Carnot engine. +1 Physics Previous (2009-2016) Questions Chapter Wise iii.K-1. [Imp 2015] 1) Pour hot tea and cold milk in your cup and leave it to attend phone call. what will be the melting point of ice 2. P-V diagram of a gas is shown in the the cup of tea hotter when you return after figure.” Do 1. b) Name the four processes taking place in Carnot cycle. a) Heat engine is a device used to in vacuum.. Copper iv.energy. 2) Mix the two after attending the call. your phone is ringing. Doctoral Research Fellow at NIT Calicut Page34 .. In this figure AB represents isobaric attending the phone call? process and AD represents isothermal process. (2) 14. Physics.Sc. Give the reason. Latent heat of steam is 2250 b) You are in restaurant waiting for 103 J kg-1 specific heat capacity of water is your friend and ordered coffee. Which of the following can be done to keep 3. (1) under ice in polar region of earth is not freezing. Also indicate which among the curves below represents a cooling curve.. find the process in which the work done is maximum. (2) 4... (2) b) Using the above graph.. a) Explain isobaric process and isothermal process..00730C for fall in every one atmosphere pressure. (4) [March 2016] hot tea and cold milk. [March-2013] 10. Figure given below depicts the schematic 6. Doctoral Research Fellow at NIT Calicut Page35 . b) Name the four processes in a Carnot’s cycle. pressure. a) What is meant by an isothermal process? Give the equation. Three moles of an ideal gas kept at a constant temperature of 300 K are compressed from the volume of 10 litre to 5 litre.Explain it briefly on the basis of Kinetic theory of Gases.Sc. (c) How can you find the total work done a) Pick out the one which is NOT a during a cycle from the graph? thermodynamic variable. P. [Imp-2013] 9. efficiency ( ). (1) (temperature. with work done ‘W’ on it.V diagram for a Carnot’s a) Which type of engine is this. the change is adiabatic. capacities. 1 (a) Name the process occurring between c) At constant temperature. The process B to C takes place at a constant temperature of 1000K and the c) A Carnot engine is working between process from D to A at a constant temperature temperatures of 270C and 3270C . a) Which thermodynamic process is involved in this process? b) Calculate the work done required to compress this gas. (d) Calculate the efficiency of the cycle. i) isothermal expansion? transfers heat to the hot body. work. is propagating through a gaseous medium. Physics. (1+2+1) ii) adiabatic expansion? (2) a) What does the ratio Q/W represent? c) Gases have two specific heat b) The value of Q/W cannot be infinity. The variables which determine the (b) During which of the four processes. +1 Physics Previous (2009-2016) Questions Chapter Wise 5. Carnot cycle. volume) (1+ 1+ 1+ 1) [March 2014] b) What happens to the internal energy of a gas during 8. a heat cycle. P V i) A and B ii) B and C . NET. A thermodynamic process characterized representation of an engine. c) It is possible to cool a room by leaving Show that adiabatic bulk modulus is the door of the electric refrigerator open. by pressure. (1+1+1) [Imp-2014] engine or a refrigerator? 7. volume and temperature. A refrigerator takes a quantity of heat ‘Q’ from the cold body.Why? (1) State the law of thermodynamics that explains d) Laplace pointed out that when sound this statement. Cp and Cv . c) Draw the P . is thermodynamic behaviour of a system are work done by the gas? called thermodynamic variables. The figure shows the pressure – volume b) Write the four steps of operation in the relationship of an ideal gas that undergoes a Carnot cycle. Saju K John M. (2) [March 2015] Comment on this statement. Find it of 500K. In which of these . Isobaric. Doctoral Research Fellow at NIT Calicut Page36 . Carnot d) Absolute scale of PV = Constant designed an ideal heat engine which uses an temperature ideal gas as working substance. [March – 2011] a) Mayer’s relation TV 1 = Constant 14. +1 Physics Previous (2009-2016) Questions Chapter Wise [Imp-2012] supplied to the engine from the source per cycle? [ Imp – 2010] 11. A heat engine is a device that converts cycle and deduce the expression for heat energy into mechanical energy. Match the following: volume V1 to volume V2 at a constant temperature T. that no heat engine can be 100% efficient? [March 2010] c) One mole of an ideal gas expands from 16. source and working between steam point and ice working substances of a domestic point. Derive an expression for the A B work done. the work done is maximum. V.find the temperature of the sink and the processes. A heat engine is a device which converts heat energy into work. a gas expands from V1 to V2? c) Obtain the expression for the work b) Which law of thermodynamics implies done during an adiabatic process. when source. Thermodynamics deals with the concept of heat and the exchange of heat energy. its efficiency becomes adiabatic processes are some special 3 thermodynamic processes. its efficiency. a) What is the working substance in an ideal heat engine? a) Which law of thermodynamics is b) Draw the Carnot cycle and explain its used to explain the working of heat working. also called an isoentropic process? Can we decrease the temperature of a room by keeping the door of a b) The efficiency of a Carnot engine is refrigerator opened? Explain. isochoric and 1 sink by 650C. V = Constant a) Draw a graph showing the variation Cp of pressure and volume of the Cv working substance during the [March-2009] operations of this engine in one cycle. b) A Carnot engine working between 17A. How much heat is etc. 15A. a) Isothermal. NET.If one reducing the temperature of the [Imp-2011] 6 13. a) Which thermodynamics process is b) A refrigerator is a reverse heat engine. a) Briefly explain the working of a heat OR engine taking Carnot engine as an ideal engine. the operations of a Carnot’s engine draw the Carnot’s 12.) Change.Sc. engine? c) Calculate the efficiency of an engine b) What are the sink. A heat engine is a device which converts b) Isothermal process Cp – Cv = R c) Adiabatic process Lord Kelvin heat energy into mechanical energy. (2) 1 . (3) 15B. A thermodynamic process is one in 5270C and 1270 C has a work output of which the thermodynamic variables (P. Saju K John M. Can you design an engine of refrigerator? 100 % efficiency? c) Explain briefly. T 800 J per cycle. Physics. Kinetic theory of gases is based on the a) What is the working substance in an molecular picture of matter. (1+ 2) [March 2014] done in an adiabatic process 6. Mention the process theory of gases. A gas is made up of hydrogen and oxygen involving an ideal gas in terms of molecules. ideal heat engine? b) Draw the indicator diagram for the a) Write any two postulates of kinetic Carnot cycle. +1 Physics Previous (2009-2016) Questions Chapter Wise a) Name the thermodynamic process in a) State the law of equipartition of which PV = constant. The volume temperature graph of a certain amount of perfect gas at two pressures P1 and P2 are shown.s. ii) Mean free path [March-2013] [March-2009] 8. The collisions made by these b) Define the law of equipartition of molecules on the walls of the container exert energy. According to the kinetic theory of gases. gas molecules are always in random motion. Saju K John M. (2) [SEPT-2016] Absolute zero is the minimum temperature that can be reached by a system. a) Which molecules moves faster? OR b) Find the ratio of the velocities of 17B.m. Deduce an expression for the pressure of an ideal gas and also find at what temperature the b) Write any four postulates of the kinetic r. (2) [March 2016] possible. 9. Which pressure is larger P1 or P2 ? Give Reason. [Imp-2013] heat energy into work. (1+2) pressure and volume. “No real gas is truly ideal”. path’? Give an equation for the mean c) Derive an expression for the work free path. efficiency of a Carnot engine in terms of source and sink temperatures. What do you understand by the term. 5. b) State and explain first law of b) What do you mean by ‘mean free thermodynamics. b) Write short note on: c) Derive an expression for the i) Equipartition of energy. Write four postulates of kinetic theory of temperature below absolute zero is not gases. (2) Chapter -13 Kinetic Theory of Gases 1. energy. Explain why 2. involved in the cycle. a) According to the kinetic theory of gases. Physics.Sc. 7. speed of hydrogen is double its value at theory of gases. NET. (1 + 2) [Imp-2014] STP. (1) [March 2015] pressure on the walls. a) When does a real gas approach ideal the molecules of a gas are identical and in gas behaviour? (1) random motion. 4. a) Write the ideal gas equation. Doctoral Research Fellow at NIT Calicut Page37 . (2) [Imp-2011] 3. A heat engine is a device which converts hydrogen and oxygen molecules. mean free path of molecules? Name the OR factors on which it depends. in which case the [Imp 2015] work done will be greater.At which position (2) will its kinetic energy become equal to its potential energy? (2) [March 2015] Saju K John M. (3) 11.. (1) a body to be simple harmonic.m. 4. if its time molecules? period on the earth is 3....Sc. the surface of the moon is 1.. Two vessels of the same size are at the same temperature. and direction. iv) acceleration of constant Oscillations magnitude but changing direction.. +1 Physics Previous (2009-2016) Questions Chapter Wise 3 c) Graphically show the variation of b) For a gas r = and R is the universal 2 Kinetic energy of a simple pendulum is SHM gas constant... One of them contains 1 kg a) What do you mean by simple 0f hydrogen (molecular weight 2) and the harmonic motion? (2 +2) other contains 1 kg of nitrogen (molecular b) The acceleration due to gravity on weight 28).. a) Write the mathematical expression for c) Which of the vessels is at higher the time period of simple pendulum... Doctoral Research Fellow at NIT Calicut Page38 . time period T=2s. 10.. Derive pressure? Why? [ Imp – 2010] it.5 second? b) In which vessel is the average [March 2016] molecular speed greater? How many times greater? 3.. a) A particle executing SHM is an example c) The root mean square velocity of of .7 m/s2 What is the time period of a simple a) Which of the vessels contains more pendulum on the moon. x 8sin 10 t / 4 m . (2) b) For a SHM. 1. iii) acceleration of changing Chapter -14 magnitude but constant direction. b) A sudden expansion or compression is considered as an adiabatic process as there will be no time sufficient for exchanging the heat generated to the surroundings. NET...s. Now if a gas is comprised to half its volume first rapidly and then slowly. (1) molecules of a gads depends on temperature only... If c) An SHM is given by displacement from the mean position is 10 cm. Find the temperature at which r. Motion of a simple pendulum is an example for simple harmonic motion. Physics. of length L as measured in a lift descending with the acceleration g/3 m/s2 is ……. find the values of CP and CV. a) Define Simple Harmonic motion b) List any two conditions for a motion of (SHM). (1) [SEPT-2016] [March – 2011] 2. i) acceleration of constant magnitude velocity of a gas at 00C will get doubled. [ Imp – 2009] ii) acceleration of changing magnitude and direction. a) State the law of equipartition of b) The time period of a simple pendulum energy. calculate the instantaneous acceleration. with its position. . 6. the normal . you can hear maximum sound converted to .. Time period of a particle in simple harmonic oscillator.. What is the effect of this on the time period of the pendulum? c) The displacement of y (in cm) of an oscillating particle varies with time t (in sec) according to the equation. Doctoral Research Fellow at NIT Calicut Page39 .. To move the bob from X to Y...energy increases.Sc....energy. constant. Represent Simple Harmonic Motion graphically. (4 x ½ =2) modes of vibration in the case of air in an open tube. a) Define Simple Harmonic Motion.. (1+1+1) harmonic motion (SHM) depends on the force constant K and mass m of the particle. Simple pendulum is an example for a 5B.. some of this energy is certain height. It swings from Y to Z and back to Y.. c) What is the frequency of a simple pendulum mounted in a cabin that is a) Which one of the following examples freely falling under gravity? closely represents SHM? Substantiate your answer..5 t / 3) a) Take suitable words from the bracket Find the amplitude and period of the particle. [March-2013] (Potential.. The motion represent by the equation watch give the correct time during the y t ACos(t ) is called simple free fall? Why? harmonic motion (SHM).. The bob is ii) Oscillations of a swing. the total energy is b) Explain with diagrams. b) What is the acceleration of the bob c) Open pipes are preferred to closed when it is at X? (1) ones in musical instruments. While performing the resonance column . and back to Y. Why? c) What are damped oscillations? (1) (1+3+1) [March 2014] OR 7. NET.. (2+ 1+ 2) [Imp-2014] i) The rotation of the earth about it axis.... Does the 8.. resonance) 9A..... different. a) A simple pendulum executes SHM b) What is the expression for the period of approximately. ..... A simple pendulum starts with its bob at position X.. pulled aside to Y and then released.. and fill in the gaps. kinetic. +1 Physics Previous (2009-2016) Questions Chapter Wise 5A... Why them is the time oscillation of a simple pendulum? period of a simple pendulum c) A girl is swinging on a swing in the sitting independent of the mass of the position.. y 2Cos(0. Physics.. As it moves apparatus experiment in a laboratory at a from Y to X...has to be done on it and its Saju K John M. Throughout the swing from Y to Z a) Name the physical concept behind it.... work. shown in the figure. How will the period of swing be pendulum? affected if she stands up? [Imp-2013] b) A man with wristwatch on his hand falls from the top of a tower.. b) A vibrating simple pendulum of period T is placed in a lift which is accelerating downwards.. [Imp-2012] the damping force is proportional to the OR velocity of the oscillator.. 4 c) Greater the mass of the pendulum bob calculate the displacement at time. Frequency of Oscillations. If mass. A simple pendulum ‘K2’ are connected to a mass ‘m’ placed on a k executes SHM approximately. This is because of damping. Doctoral Research Fellow at NIT Calicut Page40 .Sc.H.. m 4m 2 [Imp-2011] Determine: 12A. Derive an expression for the time mass? period of the horizontal oscillation of the system. Oscillation of a loaded spring are simple harmonic motion.. [Imp-2011] a) What do you mean by simple 13. derive an expression for its frequency. Maximum acceleration of the continuously. b) Name two examples for simple 1 -1 r K CV 5 harmonic motion.is given by x 5Cos 2 t its apparent weight is zero.... +1 Physics Previous (2009-2016) Questions Chapter Wise a) Write the differential equation 11. Why then horizontal frictionless surface as shown in the the period of pendulum is independent of figure....3 Jmol.. the work it can do in being brought to rest.... NET. t=1.. A mass of 3 kg is attached to Natural Damped Forced the free end of the spring. The amplitude of oscillation of a simple i. c) A spring with spring constant 1200 N/m is mounted on a horizontal table F(t)=20Sin(16t Frequency f= =0. ( 3) 9B. Say true or false: harmonic motion? a) The total energy of a body is equal to b) Derive an expression for period of oscillation of a loaded spring.. The mass is Oscillation Oscillation Oscillation then pulled sideways to a distance of ω=.3 +0.... Physics. Two spring of force constant ‘K1’ and T 2 . shorter is its frequency of oscillation.3) as Energy=[ML2 Frequency= Plank’s T-2] [T-1 ] Constant = shown.. c) A body oscillate with b) A block of wood is floating in water S.M. (3) c) What is the frequency of oscillation of a simple pendulum mounted in a cabin that is freely falling under gravity? [Imp-2012] 10. pendulum oscillating in air decreases ii. R=8. k b2 ω = ωd 2 cm and released. Fill in the blanks: representing Simple Harmonic Motion. a) What is a seconds pendulum? OR b) Time period of a particle in SHM is m 12B.. CP 7 CV = .5s [March 2012] d) The location of centre of mass of a system is independent of the frame of reference used to locate it Saju K John M. if the point of suspension of the energies equal? simple pendulum. During oscillations of a simple pendulum. If A is the amplitude of oscillation finding the period of oscillations of simple of the particle. constant. 18. +1 Physics Previous (2009-2016) Questions Chapter Wise [Imp-2011] i. The amplitude of a simple harmonic acceleration f. He then filled it a) Write an example for a periodic with water. potential energy and kinetic energy with displacement. The motions that repeat themselves are of oscillations is done at height equal called periodic motions but for a simple to the radius of earth). a) Period iii. b) Calculate the period of oscillation of pot. The period of oscillation of pendulum negligible mass from a rigid support. At what points is its speed half the string fixed rigidly to a support. the total energy remains result explaining whether three students. What will be the period if the simple pendulum. Physics. If T is period of oscillation pendulum is suspended in a lift of a simple pendulum show that the time taken moving down with acceleration equal by the bob to go directly from its mean to g/3. Ramu tied a spherical pot with a string and suspended on a clamp. A simple pendulum a) Name the system to which the above system is identical. c) Maximum acceleration d) Total energy. Moves downwards vertically with observe in the following physical quantities of acceleration less than the acceleration the oscillator? due to gravity. Falls freely under gravity. At what distance from the mean position is its kinetic energy 14. Is taken to a high equal to the radius of earth (experiment to find the period 16. Moves horizontally with an acceleration f. form a is T. NET. Doctoral Research Fellow at NIT Calicut Page41 . At what displacement are these oscillation. a) A simple pendulum is an object equal to its potential energy? suspended by a weightless and inextensible ii. Using the the oscillation. are the oscillations of the 17. position to half the amplitude is T/12. b) A particle executing SHM possess both b) Arrive at an expression for the period of potential energy and kinetic energy. radius of the pot is 10 cm. b) Maximum velocity iv. [March – 2011] i. harmonic motion. [ Imp – 2010] v.Sc. c) A particle executes a SHM of amplitude ‘a’. pendulums of same length but with bobs of different masses will get the same value for i. Saju K John M. He then slightly b) Write the expression for a period of displaced the pot to one side and made it to oscillation of : oscillate. Length of the string is 90 cm and motion that is not a simple harmonic. Show graphically. c) Explain what happens to the period of ii. the force must be [ Imp – 2009] proportional to the displacement and it is directed towards the centre of motion. What change will you ii. i. the variation of period of oscillations or not. suspended pendulum simple harmonic? from one end of and in extensible string on ii. Moves vertically upwards with an 15. maximum speed? i. oscillation is doubled. A loaded spring ii. Under what conditions for the [March 2010] amplitude. a) A particle of mass m (bob). [March 2015] (1) 5. harmonic. 3.. Waves 1 2 Angular Frequency v . +1 Physics Previous (2009-2016) Questions Chapter Wise c) Ramu made a small hole at the ii) Standing wave bottom of the pot. d) What is the initial phase at the origin? b) Open pipes are preferred to closed pipes in musical instruments. But. Doctoral Research Fellow at NIT Calicut Page42 . when the water is completely drained out.Sc.018 / 4 (2) [SEPT-2016] Where x and y are in centimetres and t in seconds.. i) Doppler effect Saju K John M. She is moving away from a source producing a sound of Two strings A and Fixed Number of 512Hz.Hz from 6 per heard by her. This is due to the phenomenon of a) Is this a travelling wave or a resonance. what is the speed a) Show that for a pipe closed at one and direction of its propagation/ end.... so that there is a steady leakage of water and found iii) Newton’s law of cooling that the period of oscillation iv) Resonance (1) increases. Why? [Imp-2014] [March 2016] 6. The equation for a wave is given below. (speed of sound in air = string A second.. the period b) Obtain a general expression for the suddenly decreased to the original apparent frequency of the siren as heard by the value. 340 m/s) decreasing from (1) 324Hz b) Name the phenomenon that explains this variation in frequency. of string B increasing a) Calculate the frequency of sound Frequency of = . (3) variations. (1+1+2) hear maximum sound at a certain height. iˆ = 1 iˆ iˆ =.. The positive direction of x is from 2. Fill in the blanks. Physics. t 3..0sin 36t 0. (1+ 1+ 2) increases as it approaches a boy standing at bus stop. [March -2009] 4. A transverse harmonic wave on a string is c) Draw the second harmonic of an described by open pipe (both end open)... B are vibrating frequency beats together. the frequencies are in the ratio c) What is its amplitude and frequency? v1 : v2 : v3 1: 3: 5.= frequency T 1. Mark node and an antinode in the figure.. The pitch of the siren of a fire engine y A Sin( kx t ) . NET.. is due stretched string in the second to……….. iˆ = 1 iˆ . In resonance column experiment. [Imp 2015] a) It is a travelling or stationary wave? b) Draw the stationary waves in a a) The phenomenon behind it. (3) Chapter -15 iˆ .. Give reasons for the above boy. we can left to right.. (2+2) stationary wave? b) If it is travelling. A woman is travelling in a 2 T car at a speed of 25 m/s. y x.. Why? a) What type of wave is produced in the ii. how many beats per second will be heard if the sound travels with a speed Y ( x. resonance column experiment. a) Depending on the direction of the experiment in the laboratory. A flute is an example of an open pipe. t ) 3. [Imp-2011] the case of stationary wave (node or 12. What was the condition assumed by string? Laplace in correcting Newton’s equation for the velocity of sound in b) Plot the above wave pattern pictorially.0 sin(36t 0. a) Sketch the pattern of wave forms of a) Is it is travelling or stationary wave? the first two harmonics formed in an b) What are its amplitude and open pipe. Transverse waves cannot be produced. +1 Physics Previous (2009-2016) Questions Chapter Wise c) Show that the fundamental frequency three harmonics are in the ratio of of an open pipe is twice the v 1 : v 2 : v 3 =1 : 3: 5. A transverse harmonic wave on a string is source is moving towards the wall with a described by velocity of 5 ms-1.0 t). you can hear the displacement caused in the medium and that maximum sound at a certain height. In a Laboratory Raju uses a tuning fork in described by y = 0. NET. where of 330ms-1? [March – 2011] 4 x and y are3 in centimetres and t in seconds. the frequencies of the first b) For a passenger standing in a railway station. Physics. fundamental frequency of a closed of c) Open pipes are preferred to the same length. 13. a) Wave motion is a propagation of energy antinode)? Why? (1) [Imp-2013] through a material medium due to repeated 8. the frequencies of the whistle of the train differ as it approaches and moves away Saju K John M.Sc.0 x -3. [March 2014] why? [March 2012] 7. we can have transverse and longitudinal waves in solids. While conducting a resonance column 14. a) Explain the phenomenon of But we can have only longitudinal waves in sound. frequency? b) Show that in an open pipe the c) What is the initial phase at the origin? frequencies of the first three d) If it is a travelling wave. closed ones in musical instruments. a) Calculate: a) Why type of wave is produced by the tuning fork in this case? i) Amplitude (1) ii) Wavelength (1) b) Mention any four characteristics of b) Where will a man hear a louder sound in these waves. Why? b) Show that in a closed pipe at one end.005 sin (80. The positive direction of x is from left to right. A sound travelling along a string is 11. fluids. string and observes the wave pattern i. of direction of propagation. Doctoral Research Fellow at NIT Calicut Page43 . If the 9. A student plucks at the centre of a stretched periodic motion. what are the harmonics are in the ration 1:2:3 speed and direction of its propagation? [Imp-2012] [ Imp – 2010] 10.018 x ) . equation. propagated through gases. [March-2013] b) A source of sound of frequency 256 Hz is in –between a listener and a wall. a gas? Write the Newton’s-Laplace Label the nodes and antinodes on the pattern. find the velocity of the train. a) What is this phenomenon called? b) Write down the expression for the apparent frequency heard by a stationary observer when the source is approaching him with a velocity ‘u’. i. A man standing on the platform observes a change in frequency of the sound produced. c) Write the general expression for a plane progressive wave.) 15. (The velocity of sound is 340 m/second. This apparent change in frequency due to the relative motion of the source or observer is called Doppler effect. c) If the apparent frequency of the whistle of an engine changes in the ratio 5:4 as the engine passes a man at rest in the railway station. When listener is moving and the source is stationary. +1 Physics Previous (2009-2016) Questions Chapter Wise from him.Sc. Find a general expression for the apparent frequency. d) Distinguish between transverse and longitudinal waves. Doctoral Research Fellow at NIT Calicut Page44 . Physics. [March-2009] Saju K John M. Using this expression explain the variation of frequency. When the source of sound is moving and listener is stationary. A train is approaching the station blowing its siren. NET. Give one example for each. ii.