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Online Tests
ECAT Physics Chapter 4 Work and Energy Online Test MCQs With Answers
Question # 1
In the force applied to parallel to the direction of motion, then the work done is:
Choose an answer
Positive
Negative
Zero
None of these
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Question # 2
Work done is maximum when angle between force and displacement is:
Choose an answer
0
°
90
°
180
°
None of these
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Question # 3
Work done on a body by gravity in lifting it up to certain height is
Choose an answer
Maximum
Minimum
Zero
Negative
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Question # 4
Work done is maximum when angle between force and displacement is
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0°
90°
180°
None of these
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Question # 5
Which of the following type of force can do no work on the particle on which it acts:
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Frictional force
Gravitational force
Electric force
Centripetal force
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Question # 6
In the force applied is parallel to the direction of motion, then work done is:
Choose an answer
Maximum
Minimum
Zero
None of these
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Question # 7
Work has the dimension as that of:
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Torque
Angular momentum
Linear momentum
Power
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Question # 8
Work is a:
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Scalar quantity
Vector quantity
Base quantity
None of these
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Question # 9
Work is product of:
Choose an answer
Force and velocity
Heat and energy
Force and displacement
None of these
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Question # 10
The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
Choose an answer
mgh
Its wight
Weight X height
Zero
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Question # 11
The work done by a force keeping an object in circular motion with constant speed is:
Choose an answer
Zero J.
0.1 J
1 J
0.01 J
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Question # 12
Work done is maximum when angle between force and displacement is:
Choose an answer
0
°
90
°
180
°
None of these
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Question # 13
The Space around the Earth within which it exerts a force of attraction on other bodies is known as
Choose an answer
Nuclear field
Conservative field
Electric field
Gravitational field
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Question # 14
Watt x second is unit of:
Choose an answer
Force
Work
Power
None of these
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Question # 15
Work is a:
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Scalar quantity
Vector quantity
Base quantity
None of these
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Question # 16
A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:
Choose an answer
+5 X 10
1
J
+5 X 10
2
J
+5 X 10
3
J
+5 X 10
4
J
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