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

Most of the geysers occur in:

Question # 2

Maximum work is done when force and displacement are

Question # 3

Tick the conservative force

Question # 4

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

Question # 5

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is:

Question # 6

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

Question # 7

SI Unit of work is

Question # 8

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

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

Work is a always done on a body when

Question # 11

The tidal energy is due to gravitational pull of :

Question # 12

Power is a :

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 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
2 A solar cell converts energy of the Sun into:
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
3 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
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 Work has the dimensions as that of
A. Torque
B. Angular momentum
C. Linear momentum
D. Power
6 The space around the earth in which its gravitational force acts on a body is called
A. Electric Field
B. Gravitational field
C. Magnetic field
D. Conservative field
7 The work done in moving a body between two points in a conservation field is independent of the:
A. Direction
B. Force applied
C. Path followed by the body
D. Power
8 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
9 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
10 A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J

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