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 dimensions of work

Question # 2

Work done is lowering the bucket into the well is:

Question # 3

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

Question # 4

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 # 5

When a falling body hits ground, its KE changes to _____ energy.

Question # 6

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

Question # 7

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

Question # 8

Work done in lower and bucket into the well is:

Question # 9

The ultimate source of money sources of energy is:

Question # 10

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

Question # 11

The types of mechanical energy is/are:

Question # 12

Work done is maximum when angle between force and displacement is:

Question # 13

SI Unit of work is

Question # 14

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

Question # 15

Which of the following is not a unit of power:

Question # 16

Work is always done on a body when:

Question # 17

Which one is conservative force

Question # 18

Work is a

Question # 19

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

Question # 20

The energy stored int he water of the dam is:

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

Tick the conservative force

Question # 25

The Space around the Earth within which it exerts a force of attraction on other bodies is known as

Question # 26

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

Question # 27

The power of an electric generating station is expressed in:

Question # 28

Which force is not a conservative force?

Question # 29

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

Question # 30

The tidal energy is due to gravitational pull of :

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
2 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
3 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:
A. 1.25 J
B. 12.5 J
C. 125 J
D. None of these
4 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:
A. Power
B. Work
C. Pressure
D. None of these
5 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
6 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
7 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.
8 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
9 The work done by a force keeping an object in circular motion with constant speed is:
A. Zero J.
B. 0.1 J
C. 1 J
D. 0.01 J
10 In the force applied to parallel to the direction of motion, then the work done is:
A. Positive
B. Negative
C. Zero
D. None of these

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