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

Which force is not a conservative force?

Question # 2

Work-energy principle states that work done on the body by applied force is equal to change in:

Question # 3

The work performed on an object does not depend on:

Question # 4

When velocity of moving body is doubled, the quantity which is also doubled is its:

Question # 5

Which of the following type of force can do no work on the particle on which it acts:

Question # 6

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 # 7

Area under the force displacement graph gives

Question # 8

The power of an electric generating station is expressed in:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Work done is maximum when angle between force and displacement is

Question # 13

Which of the following types of force can do no work on the particle on which it acts

Question # 14

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 # 15

Tick the conservation force:

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

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 # 20

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

Question # 21

The commercial unit of electrical energy is :

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

The work performed on an object does not depend on:

Question # 26

Work is a always done on a body when

Question # 27

SI Unit of work is

Question # 28

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

Question # 29

The energy stored int he water of the dam is:

Question # 30

Work done in lower and bucket into the well is:

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ECAT Physics Chapter 4 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 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
3 The ultimate source of money sources of energy is:
A. Sun
B. Air
C. Water
D. Petroleum
4 Tick the conservative force
A. Tension in a string
B. Air resistance
C. Elastic spring
D. Frictional force
5 The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
A. mgh
B. Its wight
C. Weight X height
D. Zero
6 Tick the conservation force:
A. Tension in a string
B. Air resistance force
C. Elastic spring
D. Frictional force
7 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be
A. 60°
B. 90°
C. 30°
D. 0°
8 When the body is 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
9 Work done on a body by gravity in lifting it up to certain height is
A. Maximum
B. Minimum
C. Zero
D. Negative
10 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these

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