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

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

MCQ Questions for Class11 Physics Chapter 5 Laws of Motion

Laws of Motion Class 11 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 5 Laws of Motion with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have Provided Laws of Motion Class 11 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 11 Physics Chapter 5 Quiz

Class 11 Physics Chapter 5 MCQ Online Test


You can refer to NCERT Solutions for Class 11 Physics Chapter 5 Laws of Motion to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Laws of Motion Class 11 Physics MCQ online test

Q1. A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N, when the lift is stationary. If the lift moves downwards with an acceleration of 5 m/s, the reading of the spring balance will be
A.15 N
B.24 N
C.49 N
D.74 N
Ans: 24 N
Q2. Two forces 6 N and 8 N act at a point O. If the angle between the lines of action of the force is 90°, then their resultant is
A.14 N
B.12 N
C.10 N
D.48 N
Ans: 10 N
Q3. A body of mass 15 kg moving with a velocity of 10 m/s has its velocity reduced to 6 m/s in two seconds. The force that produced this change in velocity is
A.60 N
B.30 N
C.45 N
D.20 N
Ans: 30 N
Q4. The frame of reference attached to a satellite of the earth is
A.an inertial frame
B.an absolute frame at rest with respect to the stars
C.a non – inertial frame
D.a gravitational frame
Ans: a non – inertial frame
Q5. A machine gun fires a bullet of mass 40 g with a velocity of 1200 ms-1. The man holding it can exert a maximum force on 144 N on the gum. How many bullets can he fire per second at the most?
A.one
B.four
C.two
D.three
Ans: three
Q6. A block of mass M is placed on a flat surface. A force is applied to move it parallel to the surface. The frictional force f developed is proportional to the
A.square of the mass of the body
B.mass of the body
C.reciprocal of the mass of the body
D.reciprocal of the square of the body
Ans: mass of the body
Q7. A passenger in a moving bus is thrown forward when the bus is suddenly stopped. This is explained
A.by Newtons first law
B.by Newtons second law
C.by Newtons third law
D.by the principle of conservation of momentum
Ans: by Newtons first law
Q8. A rocket with a lift-off mass of 3.5 × 10 kg is blasted upwards with an acceleration of 10 m/s². The initial thrust of the blast is (take g = 10 m/s²)
A.1.75 × 105N
B.3.5 × 105N
C.7.0 × 105N
D.14 .0 × 105N
Ans: 7.0 × 105N
Q9. 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
A.5 m/s
B.0.1 m/s
C.15 m/s
D.20 m/s
Ans: 0.1 m/s
Q10. A body is sliding down a rough inclined plane which makes an angle of 30 degree with the horizontal. If the co-efficient of friction is 0.26, the acceleration in m/s² is
A.1.95
B.2.78
C.3.47
D.4.6
Ans: 2.78
Q11. A block of mass M is placed on a flat surface. A force is applied to move it parallel to the surface. The frictional force f developed is proportional to the
A.square of the mass of the body
B.mass of the body
C.reciprocal of the mass of the body
D.reciprocal of the square of the body
Ans: mass of the body
Q12. A force of 12 N acts on a body of mass 2 kg. The acceleration produced on the body is
A.24 m/s²
B.6 m/s²
C.14 m/s²
D.10 m/s²
Ans: 6 m/s²
Q13. The mass of a body is 2 kg. It weight is
A.19.6 N
B.20 N
C.30 N
D.40 N
Ans: 19.6 N
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
A.5 m/s
B.0 .1 m/s
C.15 m/s
D.20 m/s
Ans: 0 .1 m/s
Q15. A body of mass 15 kg moving with a velocity of 10 m/s has its velocity reduced to 6 m/s in two seconds. The force that produced this change in velocity is
A.60 N
B.30 N
C.45 N
D.20 N
Ans: 30 N
Q16. 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
A.0.2
B.0.25
C.0.3
D.0.35
Ans: 0.2
Q17. A body is sliding down a rough inclined plane which makes an angle of 30 degree with the horizontal. If the co-efficient of friction is 0.26, the acceleration in m/s² is
A.1.95
B.2.78
C.3.47
D.4.6
Ans: 2.78
Q18. 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
A.the gravitational mass
B.the electromagnetic mass
C.the internal mass
D.the inertial mass
Ans: the inertial mass
Q19. A machine gun fires a bullet of mass 40 g with a velocity of 1200 ms-1. The man holding it can exert a maximum force on 144 N on the gum. How many bullets can he fire per second at the most?
A.one
B.four
C.two
D.three
Ans: three
Q20. A passenger in a moving bus is thrown forward when the bus is suddenly stopped. This is explained
A.by Newtons first law
B.by Newtons second law
C.by Newtons third law
D.by the principle of conservation of momentum
Ans: by Newtons first law

MCQ Questions for Class 11 Physics


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