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

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Question # 2

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

Question # 3

Which of the following is not a unit of power:

Question # 4

The work performed on an object does not depend on:

Question # 5

1 J = ________?

Question # 6

Which force is not a conservative force:

Question # 7

The power of an electric generating station is expressed in:

Question # 8

The consumption of energy by a 60 W bulb in 2 minutes is:

Question # 9

SI Unit of work is

Question # 10

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

Question # 11

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

Question # 12

The unit of work in CGS system is

Question # 13

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

Question # 14

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

Question # 15

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:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is
A. 0.5 J
B. 2 J
C. 0.25 J
D. 1 J
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 Work is a always done on a body when
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B are correct
4 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
5 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
6 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
7 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
8 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
9 The tidal energy is produced due to rotation of Earth relative to:
A. Moon
B. Sun
C. Oceans
D. Water
10 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:
A. 2 J
B. 0.25 J
C. 1 J
D. 0.5 J

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