BITSAT Physics Laws Of Motion MCQs

Refer to BITSAT Physics Laws Of Motion MCQs provided below. BITSAT Full Syllabus Physics MCQs with answers available in Pdf for free download. The MCQ Questions for Full Syllabus Physics with answers have been prepared as per the latest syllabus, BITSAT books and examination pattern suggested in Full Syllabus by BITSAT, NCERT and KVS. Multiple Choice Questions for Laws Of Motion are an important part of exams for Full Syllabus Physics and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for BITSAT Full Syllabus Physics and also download more latest study material for all subjects

MCQ for Full Syllabus Physics Laws Of Motion

Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Laws Of Motion in Full Syllabus. These MCQ questions with answers for Full Syllabus Physics will come in exams and help you to score good marks

Laws Of Motion MCQ Questions Full Syllabus Physics with Answers

 

Question: Two equal heavy spheres, each of radius r, are in equilibrium within a smooth cup of radius 3r. The ratio of reaction between the cup and one sphere and that between the two sphere is

 BITSAT Physics Units and Measurements 56

  • a) 1
  • b) 2
  • c) 3
  • d) 4

Answer: 2

 

Question: The masses of blocks A and B are m and M respectively. Between A and B, there is a constant frictional force F and B can slide on a smooth horizontal surface. A is set in motion with velocity while B is at rest.What is the distance moved by A relative to B before they move with the same velocity?

 BITSAT Physics Units and Measurements 57

  • a)

    BITSAT Physics Units and Measurements 58

  • b)

    BITSAT Physics Units and Measurements 58

  • c)

    BITSAT Physics Units and Measurements 60

  • d)

    BITSAT Physics Units and Measurements 61

Answer:

BITSAT Physics Units and Measurements 61

 

Question: In figure, two blocks are separated by a uniform strut attached to each block with frictionless pins. Block A weighs 400N, block B weighs 300N, and the strut AB weigh 200N. If μ = 0.25 under B, determine the minimum coefficient of friction under A to prevent motion 

BITSAT Physics Units and Measurements 62

  • a) 0.4
  • b) 0.2
  • c) 0.8
  • d) 0.1

Answer: 0.4


Question: A rifle man, who together with his rifle has a mass of 100 kg, stands on a smooth surface and fires 10 shots horizontally. Each bullet has a mass 10 g and a muzzle velocity of 800 ms–1. The velocity which the rifle man attains after firing 10 shots is

  • a) 8 ms–1 
  • b) 0.8 ms–1
  • c) 0.08 ms–1
  • d) – 0.8 ms–1

Answer: 0.8 ms–1

 

Question: A person with his hand in his pocket is skating on ice at the rate of 10m/s and describes a circle of radius 50 m. What is his inclination to vertical: (g = 10 m/sec2)

  • a) tan–1(½)
  • b) tan–1 (1/5)
  • c) tan–1 (3/5)
  • d) tan–1(1/10)

Answer: tan–1 (1/5)

 

Question: The minimum velocity (in ms-1) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is

  • a) 60
  • b) 30
  • c) 15
  • d) 25

Answer: 30


Question: A bob is hanging over a pulley inside a car through, a string. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration 'a' directed horizontally as  vertically. The tension in the string is equal to –

BITSAT Physics Units and Measurements 63

  • a)

    BITSAT Physics Units and Measurements 64

  • b)

    BITSAT Physics Units and Measurements 65

  • c)

    BITSAT Physics Units and Measurements 66

  • d) m (g + a)

Answer:

BITSAT Physics Units and Measurements 66


 

Question: A man of mass 100 kg. is standing on a platform of mass 200 kg. which is kept on a smooth ice surface. If the man starts moving on the platform with a speed 30 m/sec relative to the platform then calculate with what velocity relative to the ice the platform will recoil? 

  • a) 5 m/sec
  • b) 10 m/sec
  • c) 15 m/sec
  • d) 20 m/sec

Answer: 10 m/sec


Question: An object experiences a net force and accelerates from rest to its final position in 16s. How long would the object take to reach the same final position from rest if the object's mass was four times larger ?

  • a) 64 s
  • b) 32 s
  • c) 16 s
  • d) 8s

Answer: 32 s


Question: Three blocks of masses m1, m2 and m3 are connected by massless strings, as shown, on a frictionless table. They are pulled with a force T3 = 40 N. If m1 = 10 kg, m2 = 6 kg and m3 = 4kg, the tension T2 will be

BITSAT Physics Units and Measurements 67

  • a) 20 N
  • b) 40 N
  • c) 10 N
  • d) 32 N

Answer: 32 N

 

Question: Two blocks are connected over a massless pulley as shown in fig. The mass of block A is 10 kg and the coefficient of kinetic friction is 0.2. Block A slides down the incline at constant speed. The mass of block B in kg is: 

BITSAT Physics Units and Measurements 68

  • a) 3.5
  • b) 3.3
  • c) 3.0
  • d) 2.5

Answer: 3.3


Question: A spring is compressed between two toy carts of mass m1 and m2. When the toy carts are released, the springs exert equal and opposite average forces for the same time on each toy cart. If v1 and v2 are the velocities of the toy carts and there is no friction between the toy carts and the ground, then :

  • a) v1/v2 = m1/m2
  • b) v1/v2 = m2/m1
  • c) v1/v2 = –m2/m1
  • d) v1/v2 = –m1/m2

Answer: v1/v2 = –m2/m1

 

Question: A block of mass M is pulled along a horizontal frictionless surface by a rope of mass M/2. If a force 2Mg is applied at one end of the rope, the force which the rope exerts on the block is –

  • a) 2Mg/3
  • b) 2Mg
  • c) 4Mg/3
  • d) zero

Answer: 4Mg/3


Question: A reference frame attached to earth cannot be an inertial frame because

  • a) Earth is revolving around the sun
  • b) Earth is rotating about its axis
  • c) Newton’s laws are applicable in this frame
  • d) Both (a) and (b)

Answer: Newton’s laws are applicable in this frame


Question: The mass of the lift is 100 kg which is hanging on the string. The tension in the string, when the lift is moving with constant velocity, is (g = 9.8 m/sec2)

  • a) 100 newton
  • b) 980 newton
  • c) 1000 newton
  • d) None of these

Answer: 980 newton


Question: A shell explodes and many pieces fly off indifferent directions. The following is conserved:

  • a) Kinetic energy
  • b) Momentum
  • c) Neither momentum nor KE
  • d) Momentum and KE.

Answer: Momentum


Question: In the figure shown the velocity of lift is 2 m/s while string is winding on the motor shaft with velocity 2 m/s and block A is moving downwards with a velocity of 2 m/s, then find out the velocity of block B –

BITSAT Physics Units and Measurements 69

  • a) 2 m/s ↑
  • b) 2 m/s↑
  • c) 4 m/s↑
  • d) None of these

Answer: None of these

 

Question: Inside a horizontally moving box, an experimenter finds that when an object is placed on a smooth horizontal table and is released, it moves with an acceleration of 10 m/s2. In this box if 1 kg body is suspended with a light string, the tension in the string in equilibrium position (w.r.t. experimenter) will be (Take g = 10 m/s2)

  • a) 10 N
  • b)

    BITSAT Physics Units and Measurements 70

  • c) 20 N
  • d) zero

Answer:

BITSAT Physics Units and Measurements 70

 

Question: The minimum velocity (in ms-1) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is

  • a) 60
  • b) 30
  • c) 15
  • d) 25

Answer: 30


Question: A shell explodes and many pieces fly off in different directions. The following is conserved:

  • a) Kinetic energy
  • b) Momentum
  • c) Neither momentum nor KE
  • d) Momentum and KE.

Answer: Momentum

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BITSAT Full Syllabus Physics Laws Of Motion MCQs

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BITSAT MCQs Physics Full Syllabus Laws Of Motion

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