Laws of Motion MCQ Questions for Class 11 Physics Chapter 5 with Answers

NCERTCOURSE.COM given here the NCERT chapter-wise Multiple Choice Questions from Class 11 Physics book Chapter 5 Laws of Motion with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Laws of Motion. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

MCQ Class 11 Physics Chapter 5 With Answers

Q1. A bird dismounts on a stretched telegraph wire. The additional tension produced in the wire is

(i) zero
(ii) equal to the weight of the bird
(iii) greater than the weight of the bird
(iv) less than the weight of the bird

(iii) greater than the weight of the bird

Q2. A passenger in a moving bus is thrown forward when the bus is suddenly stopped. This is explained

(i) by Newtons first law
(ii) by Newtons second law
(iii) by Newtons third law
(iv) by the principle of conservation of momentum

(i) by Newtons first law

Q3. Out of the basic forces , gravitational force

(i) ranks first in strength
(ii) ranks second in strength
(iii) ranks third in strength
(iv) ranks fourth in strength

(iv) ranks fourth in strength

Q4. If two masses (M & m) are connected on a horizontal plane and a force is applied on the combination, then the tension T depends on

(i) whether force is applied on M or m
(ii) the force applied on the system
(iii) Can’t be predicted.
(iv) None of these

(i) whether force is applied on M or m

Q5. A car sometimes overturns while taking a turn. When it overturn, it is

(i) the inner wheel, which leaves the ground first
(ii) the outer wheel, which leaves the ground first
(iii) both the wheels leaves the ground simultaneously
(iv) either wheel, which leave the ground first

(i) the inner wheel, which leaves the ground first

Q6. The mass of a body which is equal to the ratio of the force acting on a body to the acceleration produced in the body is

(i) the gravitational mass
(ii) the electromagnetic mass
(iii) the internal mass
(iv) the inertial mass

(iv) the inertial mass

Q7. Two bodies of masses 4 kg and 5 kg are acted upon by the same force. If the acceleration of lighter body is 2 m/s², the acceleration of heavier body is

(i) 1 m/s²
(ii) 1.2 m/s²
(iii) 1.6 m/s²
(iv) 1.8 m/s²

(iii) 1.6 m/s²

Q8. When an elevator cabin falls down, the cabin and all the bodies fixed in the cabin are accelerated with respect to

(i) man standing on earth
(ii) ceiling of elevator
(iii) floor of elevator
(iv) man standing in the cabin

(i) man standing on earth

Q9. A rocket of mass 6000 kg is set for vertical firing, if the exhaust speed be 1 km s-1, the gas must be ejected to give the rocket an upward acceleration of 20 ms-2 is

(i) 120 kg/s
(ii) 180 kg s-1
(iii) 45 kg/s
(iv) 90 kg/s

(ii)

Q10. A heavy uniform chain lies on horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over the edge of the table is

(i) 20%
(ii) 25%
(iii) 30%
(iv) 35%

(i) 20%

Q11. A particle of mass 0.3 kg is subjected to a force F = -kx with k = 15 N/m. What will be its initial acceleration if it is released from a point 20 cm away from the origin?

(i) 15 m/s²
(ii) 3 m/s²
(iii) 10 m/s²
(iv) 5 m/s²

(iii) 10 m/s²

Q12. The direction of impulse is

(i) same as that of the net force
(ii) opposite to that of the net force
(iii) same as that of the final velocity
(iv) same as that of the initial velocity

(i) same as that of the net force

Q13. A jet of water of cross-sectional area ‘a’ strikes a wall at angle θ with the wall and rebounds elastically with the same speed v. If density of water be p, then the normal thrust on the wall will be

(i) av²p sin θ
(ii) 2av²p sin θ
(iii) 2av²p cos θ
(iv) av²p cos θ

(ii) 2av²p sin θ

Q14. A gun of mass 1000 kg fires a projectile of mass 1 kg with a horizontal velocity of 100 m/s. The velocity of recoil of the gun in the horizontal direction is

(i) 5 m/s
(ii) 0 .1 m/s
(iii) 15 m/s
(iv) 20 m/s

(ii) 0 .1 m/s

Q15. A block of wood is placed on a surface. A force is applied parallel to the surface to move the body. The frictional force developed acts

(i) normal to the surface upwards
(ii) normal to the surface downwards
(iii) along the direction of the applied force
(iv) opposite to the direction of the applied force

(iv) opposite to the direction of the applied force

Q16. Physical independence of force is a consequence of

(i) first law of motion
(ii) third law of motion
(iii) second law of motion
(iv) all of these

(i) first law of motion

Q17. A body is placed on an inclined plane and has to be pushed down. The angle made by the normal reaction with the vertical will be

(i) equal to the angle of friction
(ii) more than the angle of friction
(iii) equal to the angle of repose
(iv) less than the angle of repose

(iv) less than the angle of repose

Q18. A force of 12 N acts on a body of mass 2 kg. The acceleration produced on the body is

(i) 24 m/s²
(ii) 6 m/s²
(iii) 14 m/s²
(iv) 10 m/s²

(ii) 6 m/s²

Q19. A body is sliding down a rough inclined plane which makes an angle of 30 degree with the horizontal. If the coeffcient of friction is 0.26, the acceleration in m/s² is

(i) 1.95
(ii) 2.78
(iii) 3.47
(iv) 4.6

(ii) 2.78

Q20. Newton’s first law of motion describes the

(i) inertia
(ii) energy
(iii) work
(iv) moment of inertia

(i) inertia

I Think the given NCERT MCQ Questions for class 11 Physics book Chapter 5 Laws of Motion with Answers Pdf free download will assist you. If you’ve got any queries regarding CBSE Class 11 Physics Laws of Motion MCQs Multiple Choice Questions with Answers, drop a comment below and that we will come back to you soon.

Class 11 Physics MCQ Questions Chapter wise with Answers

Leave a Comment