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

The space around the earth in which its gravitational force acts on a body is called

Question # 2

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

Question # 3

If force and displacement are in opposite direction, the work done is taken as:

Question # 4

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

Question # 5

The work performed on an object does not depend on:

Question # 6

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

Question # 7

Teh consumption of energy by a 1000 watt heater in half an hour is:

Question # 8

The work performed on an object does not depend on

Question # 9

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

Question # 10

Most of the geysers occur in:

Question # 11

Work done on a body by gravity in lifting it up to certain height is

Question # 12

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 # 13

Work has a dimension as that of:

Question # 14

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 15

A solar cell converts energy of the Sun into:

Question # 16

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 # 17

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

Question # 18

Tick the conservative force

Question # 19

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

Question # 20

Work has the dimensions as that of

Question # 21

Work is a scalar product of

Question # 22

If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents:

Question # 23

The unit of work in CGS system is

Question # 24

The types of mechanical energy is/are:

Question # 25

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 # 26

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 # 27

If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:

Question # 28

Maximum work is done when force and displacement are

Question # 29

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 # 30

Work is a always done on a body when

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
2 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
3 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
4 When velocity of moving body is doubled, the quantity which is also doubled is its:
A. K.E.
B. Acceleration
C. Momentum
D. P.E.
5 The work done in moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body
D. Power
6 When a body moves against the force of friction on a horizontal plane, the work done by the body is:
A. Positive
B. Negative
C. Zero
D. None of these
7 When a falling body hits ground, its KE changes to _____ energy.
A. Potential
B. Chemical
C. Mechanical
D. sound and heat
8 If one newton force acts on a body and displaces the body through 1m work done on body is
A. 1 dyne
B. 1 joule
C. 1KJ
D. 1 Watt
9 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
10 Work is always done on a body when:
A. A force acts on it
B. It moves through certain distance
C. None of A and B is correct
D. Both A and B is correct

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