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Online Tests
ECAT Physics Chapter 4 Work and Energy Online Test MCQs With Answers
Question # 1
The work performed on an object does not depend on:
Choose an answer
Force applied
Angle at which force is inclined to the displacement
Initial velocity of the object
Displacement
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Question # 2
Work has the dimensions as that of
Choose an answer
Torque
Angular momentum
Linear momentum
Power
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Question # 3
A field in which the work done is moving a body along closed path is zero is called:
Choose an answer
Nuclear filed
Conservative field
Gravitational field
Non-conservative field
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Question # 4
The ultimate source of money sources of energy is:
Choose an answer
Sun
Air
Water
Petroleum
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Question # 5
Power is a :
Choose an answer
Vector quantity
Base quantity
Scalar quantity
None of these
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Question # 6
1 J = ________?
Choose an answer
10
7
erges
10
-7
erges
10
5
erges
10
-5
erges
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Question # 7
A two Kg block is held 1 m above the floor for 50 seconds, the work done is:
Choose an answer
Zero
10.2 J
100 J
980 J
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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:`
Choose an answer
Minimum work
Maximum work
Zero work
Negative work
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Question # 9
Work done is lowering the bucket into the well is:
Choose an answer
Zero
Positive
Negative
None of these
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Question # 10
Work has the dimension as that of:
Choose an answer
Torque
Angular momentum
Linear momentum
Power
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Question # 11
The space around the earth in which its gravitational force acts on a body is called
Choose an answer
Electric Field
Gravitational field
Magnetic field
Conservative field
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Question # 12
The work done on the body will be zero if:
Choose an answer
No force is applied on the body
Force is applied but no displacement
Angle between F(force) and d(displacement) is 90
°
All of these are correct
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Question # 13
Energy stored in the spring of a watch is called
Choose an answer
Potential energy
Kinetic energy
Nuclear energy
Elastic potential
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Question # 14
A solar cell converts energy of the Sun into:
Choose an answer
Heat energy
Magnetic energy
Light energy
Sound energy
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Question # 15
Escape velocity from surface of Moon as compared to that from Earth surface is:
Choose an answer
Greater
Smaller
Equal
None of thes
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