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 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 # 2

A solar cell converts energy of the Sun into:

Question # 3

The dimensions of work

Question # 4

Work has the dimension as that of:

Question # 5

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

Question # 6

The work performed on an object does not depend on:

Question # 7

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 # 8

Which force is not a conservative force:

Question # 9

If one newton force acts on a body and displaces the body through 1m work done on body is

Question # 10

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

Question # 11

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

Question # 12

Work done is maximum when angle between force and displacement is:

Question # 13

The energy stored int he water of the dam is:

Question # 14

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 # 15

Work is always done on a body when:

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Sr.# Question Answer
1 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
2 Work is a
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
3 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:
A. 0°
B. 30°
C. 60°
D. 90°
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 is 25J. the angle which the force makes with the direction of motion will be:
A. 60°
B. 90°
C. 30°
D. 0°
5 Work is a scalar product of
A. Force, Velocity
B. Velocity, Displacement
C. Force, Displacement
D. Force, Momentum
6 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
7 The unit of work in CGS system is
A. Joule
B. Erg
C. Dyne
D. Watt
8 A field in which the work done is moving a body along closed path is zero is called:
A. Nuclear filed
B. Conservative field
C. Gravitational field
D. Non-conservative field
9 A solar cell is made from:
A. Iron
B. Silicon
C. Germanium
D. Copper
10 Escape velocity from surface of Moon as compared to that from Earth surface is:
A. Greater
B. Smaller
C. Equal
D. None of thes

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