Class 11 Physics Science

MCQ Questions Class 11 Physics Laws of Motion with Answers

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CBSE Class 11 Physics Chapter 5 Laws of Motion Multiple Choice Questions with Answers. MCQ Questions Class 11 Physics Laws of Motion with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 11 Physics Laws of Motion MCQs with Answers to know their preparation level.

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Students who are searching for NCERT MCQ Questions for Class 11 Physics Laws of Motion with Answers are compiled here to get good practice on all fundamentals. Know your preparation level on MCQ Questions for Class 11 Physics with Answers. You can also verify your answers from our provided MCQ Class 11 Physics Laws of Motion with Answers. So, ace up your preparation with MCQ of Chapter 5 Physics Objective Questions.

MCQ Questions Class 11 Physics Laws of Motion with Answers - Set - 3

Question 1: 

In a rocket, fuel burns at the rate of 1 kg/s. This fuel is ejected from the rocket with a velocity of 60 km/s. 
This exerts a force on the rocket equal to 
(a) 6000 N
(b) 60000 N
(c) 60 N
(d) 600 N

Correct Answer – (B)

Question 2 : 

A force of 6 N acts on a body at rest and of mass 1 kg. During this time, the body attains a velocity of 30 m/s. The time for which the force acts on the body is   
(a) 7 seconds
(b) 5 seconds
(c) 10 seconds
(d) 8 seconds

Correct Answer – (B)

Question 3 : 

A bullet is fired from a gun. The force on the bullet is given by F = 600 – 2 × 105 t where, F is in newton and t in seconds. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet?   
(a) 9 Ns
(b) zero
(c) 1.8 Ns
(d) 0.9 Ns

Correct Answer – (D)

Question 4 : 

A cricketer catches a ball of mass 150 gm in 0.1 sec moving with speed 20 m/s, then he experiences force of   
(a) 300 N
(b) 30 N
(c) 3 N
(d) 0.3 N

Correct Answer – (B)

Question 5 : 

A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than the previous height, the momentum when it hits the ground will change by   
(a) 68%
(b) 41%
(c) 200%
(d) 100%

Correct Answer – (B)

MCQ Questions Class 11 Physics Laws of Motion with Answers

Question 6 : 

A 10 N force is applied on a body produce in it an acceleration of 1 m/s2. The mass of the body is   
(a) 15 kg
(b) 20 kg
(c) 10 kg
(d) 5 kg

Correct Answer – (C)

Question 7 : 

A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 m s–1. To give an initial upward acceleration of 20 m s–2, the amount of gas ejected per second to supply the    needed thrust will be (g = 10 m s–2) 
(a) 185.5 kg s–1 
(b) 187.5 kg s–1
(c) 127.5 kg s–1
(d) 137.5 kg s–1

Correct Answer – (B)

Question 8 : 

If the force on a rocket, moving with a velocity of 300 m/s is 210 N, then the rate of combustion of the fuel is   
(a) 0.07 kg/s
(b) 1.4 kg/s
(c) 0.7 kg/s
(d) 10.7 kg/s

Correct Answer – (C)

Question 9 : 

Sand is being dropped on a conveyer belt at the rate of M kg/s. The force necessary to keep the belt moving with a constant velocity of v m/s will be   
(a) Mv /2 newton
(b) zero
(c) Mv newton
(d) 2 Mv newton

Correct Answer – (C)

Question 10 : 

Physical independence of force is a consequence of       
(a) third law of motion
(b) second law of motion
(c) first law of motion
(d) all of these laws

Correct Answer – (C)

MCQ Questions Class 11 Physics Laws of Motion with Answers

Set 1
Set 2
Set 3
Set 4
Set 5

NCERT Solutions & Download NCERT Textbooks

MCQ Questions Class 11 Physics Motion in a Plane with Answers

Set 1
Set 2
Set 3
Set 4
Set 5

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