ECAT Pre General Science Physics Chapter 4 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 4 Work and Energy

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ECAT Pre General Science Physics Chapter 4 Work and Energy

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Question # 1

In the force applied is parallel to the direction of motion, then work done is:

Question # 2

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

Question # 3

The space around the earth within which it expects a force of attraction on other bodies is known as:

Question # 4

The work done moving a body between two points in a conservation field is independent of the:

Question # 5

Escape velocity from surface of Moon as compared to that from Earth surface is:

Question # 6

The work done by a force, keeping an object in circular motion with constant speed is:

Question # 7

Work has the dimension as that of:

Question # 8

The work done in moving a body between two points in a conservative field is independent of the

Question # 9

Work has the dimensions as that of

Question # 10

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 11

Work is always done on a body when:

Question # 12

In the force applied to parallel to the direction of motion, then the work done is:

Question # 13

The unit of work in CGS system is

Question # 14

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be:

Question # 15

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

Question # 16

The work done on the body will be zero if:

Question # 17

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

Question # 18

The angle between centripetal force and displacement of the body moving in a circle is:

Question # 19

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Question # 20

A field in which the work done is moving a body along closed path is zero is called:

Question # 21

The energy stored int he water of the dam is:

Question # 22

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60° with the horizontal. The work done by the boy is:

Question # 23

When force and displacement are perpendicular to each other than work is equal to

Question # 24

When a wall is pushed by a person very strongly, he has done:

Question # 25

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Question # 26

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Question # 27

Work is a Quantity

Question # 28

The field in which work done in moving a body between two points depends upon the path followed is called:

Question # 29

Work done is maximum when angle between force and displacement is

Question # 30

The dimensions of work

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 If force and displacement are in opposite direction, the work done is taken as:
A. Positive work
B. Negative work
C. Zero work
D. Infinite work
2 The work performed on an object does not depend on:
A. Force applied
B. Angle at which force is inclined to the displacement
C. Initial velocity of the object
D. Displacement
3 The work done in moving a body between two points in a conservative field is independent of the
A. Direction
B. Force applied
C. Path followed by the body
D. Power
4 The types of mechanical energy is/are:
A. Kinetic energy
B. Potential energy
C. Both of these
D. None of these
5 The dimensions of work
A. [MLT-1]
B. [MLT-2]
C. [ML2T-2]
D. [MLT]
6 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
7 A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`
A. Minimum work
B.
Maximum work
C. Zero work
D. Negative work
8 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
9 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
10 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum

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