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

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 2

The path followed by the projectile is known as:

Question # 3

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 # 4

When two protons are brought closer potential energy of both of them:

Question # 5

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 # 6

Root out of the conventional source of energy:

Question # 7

Acceleration in a body is always produced in the directin of:

Question # 8

The velocity of a body at any instant of its motion is known as

Question # 9

The second law gives the relationship between

Question # 10

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?

Question # 11

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

Question # 12

A 5 kg mass is falling freely, the force acting on, it will be

Question # 13

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

Question # 14

Which one of the following is dimensionless:

Question # 15

For a moving body, at any instant of time

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
2 When the total displacement is divided by total time taken, we get:
A. Velocity
B. Average speed
C. Average velocity
D. None of these
3 In above figures, tell which set of graphs shows that a body is moving with uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
4 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
5 Bodies which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
6 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
7 Acceleration of a body is negative if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
8 Velocity is a
A. scalar quantity
B. vector quantity
C. constant quantity
D. none of them
9 The vertical component of velocity of a projectile during its motion is minimum
A. at the time of projection
B. at the highest point
C. just before hitting the plane of projection
D. all of them
10 A cold soft drink is kept on the balance. When the cap is opened, then the weight
A. Increases
B. Decreases
C. First increases, then decreases
D. Remains same

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