ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

Try The MCQ's Test For ECAT Physics Chapter 4 Work and Energy

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ECAT Physics Chapter 4 Work and Energy

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Question # 1

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

Question # 2

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 # 3

Work is a always done on a body when

Question # 4

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

Question # 5

A two Kg block is held 1 m above the floor for 50 seconds, the work done is:

Question # 6

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 # 7

Which force is not a conservative force:

Question # 8

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

Question # 9

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 # 10

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

Question # 11

Work done along a closed path in a gravitational field is:

Question # 12

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

Question # 13

A solar cell converts energy of the Sun into:

Question # 14

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 # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is
A. Much more
B. Very small
C. No amount at all
D. None of these
2 The angle between centripetal force and displacement of the body moving in a circle is:
A. 0°
B. 90°
C. 180°
D. None of these
3 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
4 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:
A. Minimum Work
B. Maximum Work
C. Zero Work
D. Negative Work
5 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
6 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
7 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
8 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
9 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
10 The space around the earth within which it expects a force of attraction on other bodies is known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field

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