## Physics MCQ on Conservation Linear Momentum for NEET, JEE, Medical and Engineering Exam 2021

MCQ on Conservation Linear Momentum: Previous trends reveal that NEET/JEE aspirants find Physics as the most challenging section amongst the other sections. But most of them fail to decipher the reason behind this. This particularly can be as the candidates taking up this examination are predominantly medical aspirants with their subject of interest being Biology. Also, sections like Physics are more on theories, laws, numerical as opposed to Biology which is more of fact-based, life sciences and comprising of substantial explanations. In this post we are providing you MCQ on Conservation Linear Momentum, which will be beneficial for you in upcoming NEET, AIIMS, JEE, WBJEE, Medical and Engineering Exams.

## MCQ on Conservation Linear Momentum

Q1. What is the motion of the rocket based on?
a) Mass
b) Linear Momentum
c) Kinetic Energy
d) Angular Momentum

(b) Linear Momentum

Q2. A bullet of mass 5 gm is fired from a gun of mass 5 kg. What is the velocity of the muzzle if the recoil velocity is 500 m/s.
a) 500m/s
b) 5m/s
c) 50m/s
d) 0.5 m/s

(d) 0.5m/s

Q3. Rocket Engines lift rocket from the earth surface because the hot gas with high velocity
a) Push against the air
b) Push against the earth
c) Heat up the air which lifts the rocket
d) React against the rocket and push it up

(d) React against the rocket and push it up

Q4. A wagon weighing 1000 kg moves 50 km/h on smooth rails. Later, a mass of 250 kg is placed in the wagon. What is the velocity with which it moves?
a) 20km/hr
b) 50km/hr
c) 40km/hr
d) 2.5km/hr

(c) 40km/hr

Q5. A player catches a ball of mass 150 gm moving at a rate of 20 m/s. If the process of catching is to be completed in 0.1 sec. What is the force exerted by the ball on the hands of the player?
a) 3000 N
b) 300 N
c) 30 N
d) 0.3 N

(c) 30 N

Q6. A  rope of length 5 m is kept on a frictionless surface and a force of 5 N is applied to one of its ends. What is the tension in the rope at 1 m from this end?
a) 1 N
b) 4N
c) 3N
d) 5N

(b) 4N

Q7. How is a jet plane able to fly in the air ?
a) The thrust of the jet plane compensates the force of gravity
b) The weight of the air is the weight of the plane
c) The force of gravity doesn’t act on bodies moving with high speed
d) The flow of the air around the wings cause an upward force which compensates for the force of gravity

(a) The thrust of the jet plane compensates the force of gravity

Q8. An iron ball having a mass of 100 g with a velocity of 10 m/s collides with the wall at an angle of 300 and rebounds with the same angle. If the period of contact between the wall and the ball is 0.1 second. What is the force experienced by the ball?
a) 0.1 N
b) 1 N
c) 10 N
d) 100 N

(c) 10 N

Q9. Which of the following is momentum closely related to ?
a) Impulse
b) Power
c) Force
d) Kinetic Energy

(a) Impulse

Q10. When a force acts on a ball of mass 150 g for 0.1 sec, it produces an acceleration of 20 m/s2. What is the value of this impulsive force?
a) 0.5N-s
b) 0.1 N-s
c) 0.3 N-s
d) 1.2 N-s

(c) 0.3N-s  