ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

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

Energy stored in the spring of a watch is called

Question # 2

1 J = ________?

Question # 3

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 # 4

Work is a Quantity

Question # 5

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

Question # 6

Which one is conservative force

Question # 7

Work is a:

Question # 8

A solar cell converts energy of the Sun into:

Question # 9

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 # 10

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

Question # 11

The ultimate source of money sources of energy is:

Question # 12

The power of an electric generating station is expressed in:

Question # 13

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

Question # 14

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

Question # 15

Most of the geysers occur in:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 If work is done at the rate of 2 k j per second, then total work done is half an hour will be:
A. 0.5 Kwn
B. 2 Kwh
C. 1 Kwh
D. None of these
2 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
3 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
4 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
5 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
6 The commercial unit of electrical energy is :
A. K Watt
B. KWH
C. Horse power
D. Joule
7 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
8 Work done in lower and bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these
9 The field in which work done is moving body between two points depends upon the path followed is called:
A. Conservative filed
B. Non-conservative field
C. Electric field
D. None of these
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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