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

Which one is conservative force

Question # 2

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

Question # 3

The ultimate source of money sources of energy is:

Question # 4

Watt x second is unit of:

Question # 5

Work is a scalar product of

Question # 6

The power of an electric generating station is expressed in:

Question # 7

Work has the dimension as that of:

Question # 8

Which force is not a conservative force?

Question # 9

The commercial unit of electrical energy is :

Question # 10

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

Question # 11

Work done by the force of friction is always

Question # 12

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 # 13

1 J = ________?

Question # 14

A solar cell is made from:

Question # 15

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

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 The energy stored int he water of the dam is:
A. Electric energy
B. Kinetic energy
C. Potential energy
D. None of these
2 1 J = ________?
A. 107erges
B. 10-7erges
C. 105erges
D. 10-5erges
3 Work done is maximum when angle between force and displacement is:
A. 0°
B. 90°
C. 180°
D. None of these
4 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
5 Most of the geysers occur in:
A. Volcanic regions
B. Magnetic regions
C. Northern region
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 and 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 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
8 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
9 Work is a:
A. Scalar quantity
B. Vector quantity
C. Base quantity
D. None of these
10 Work done is lowering the bucket into the well is:
A. Zero
B. Positive
C. Negative
D. None of these

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