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

Work is a

Question # 2

Work done is lowering the bucket into the well is:

Question # 3

The dimensions of work

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

The value of escape velocity of Earth planet comes out to be:

Question # 8

Work done in lower and bucket into the well is:

Question # 9

When the body is moves against the force of friction on a horizontal plane, the work done by the body is:

Question # 10

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

Question # 11

Which force is not a conservative force:

Question # 12

A solar cell converts energy of the Sun into:

Question # 13

The types of mechanical energy is/are:

Question # 14

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

Question # 15

Work has the dimension as that of:

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ECAT Physics Chapter 4 Important MCQ's

Sr.# Question Answer
1 Power is a :
A. Vector quantity
B. Base quantity
C. Scalar quantity
D. None of these
2 The tidal energy is due to gravitational pull of :
A. sun
B. moon
C. Mars
D. None of these
3 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
4 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:`
A. Minimum work
B.
Maximum work
C. Zero work
D. Negative work
5 When two protons are brought are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
6 The consumption of energy by a 60 W bulb in 2 minutes is:
A. 2 watt-hour
B. 120 watt-hour
C. 30 watt-hour
D. None of these
7 The space around the earth within it exerts a force of attraction on other bodies of known as:
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
8 A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
A. Zero
B. 10.2 J
C. 100 J
D. 980 J
9 When a wall is pushed by a person very strongly, he has done:
A. Maximum work
B. Zero work
C. Positive work
D. Negative work
10 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

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