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

The expression F x t is called impulse if the time 't' is

Question # 2

A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

Question # 3

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 4

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 5

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Question # 6

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

Question # 7

At the top of the trajectory of a projectile the acceleration is

Question # 8

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 # 9

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Question # 10

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

Question # 11

The motion of a body in a straight line is the motion in

Question # 12

Graphs which are used to illustrate the variation of velocity of an object with time are called

Question # 13

Change in momentum is one second called.

Question # 14

During the projectile motion, the horizontal component of velocity

Question # 15

Essential characteristic of equilibrium is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The horizontal range of projectile, at a certain place, depends upon
A. the mass of the projectile
B. velocity of projection
C. angle of projection
D. angle as well as velocity of projection
2 The motion of a body in a straight line is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
3 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
4 Unit of impulse in
A. Newton
B. Kg m
C. Kg m/s
D. Joule
5 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
6 Laws of motion are not valid in a system which is
A. inertial
B. non-interial
C. at rest
D. moving with uniform velocity
7 Blomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these
8 A body of mass 1.0 kg is falling with an acceleration of 10 m/s2. Its apparent weight will be (g=10 m/s2)
A. 1.0 kg wt
B. 2.0 kg wt
C. 0.5 kg wt
D. Zero
9 A body is thrown from a height h with speed u, it hits the ground with speed V
A. The value of V is maximum if the body is thrown vertically downward
B. The value of V is maximum if the body is thrown vertically upwards
C. The value of V is minimum if the body is thrown horizontally
D. The value of V does not depend on the direction of which it is thrown
10 A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?
A. 4.2 m
B. 8.4
C. 12.6
D. None of these

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