ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is

Question # 2

Force is a:

Question # 3

Laws of motion are not valid in a system which is

Question # 4

Which one of the following is dimensionless.

Question # 5

A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

Question # 6

The quantity F x t is called as

Question # 7

The artillery shells travel along parabolic paths under the influence of

Question # 8

Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be

Question # 9

Which quantity has the same dimension as that of impulse?

Question # 10

The mass of the object is a quantities measure of its

Question # 11

A rocket carries its own fuel in the form of

Question # 12

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Question # 13

The decrease in velocity per unit time is called

Question # 14

Angular momentum

Question # 15

During the upward motion of the projectile, the vertical component of velocity.

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687
2 Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?
A. Their range will be same
B. Their maximum height will be same
C. Their landing velocity will be same
D. Their time of flight will be same
3 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
4 A change in position of a body from its initial position to its final position is known as
A. relative motion
B. displacement
C. distance
D. acceleration
5 Newton's first law is also called:
A. Law of torque
B. Law of force
C. Law of inertia
D. None of these
6 Acceleration produced in a body by the force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
7 Blomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these
8 When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts
A. In the backward direction on the front wheel and in the forward direction on the rear wheel
B. In the forwards directions on the front wheel and in the backward direction on the rear wheel
C. In the forward direction on both the wheels
D. In the backward direction on both the wheels
9 A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is
A. Zero
B. Infinity
C. V
D. 2 V
10 Velocity of a body changes if
A. direction of the body changes
B. speed of the body changes
C. neither speed nor direction changes
D. either speed or direction changes

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