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Online Tests
Physics ECAT Pre Engineering Chapter 4 Work and Energy Online Test MCQs With Answers
Question # 1
Work is a
Choose an answer
Scalar quantity
Vector quantity
Base quantity
None of these
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Question # 2
Which of the following type of force can do no work on the particle on which it acts:
Choose an answer
Frictional force
Gravitational force
Electric force
Centripetal force
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Question # 3
Watt x second is unit of:
Choose an answer
Force
Work
Power
None of these
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Question # 4
Work is always done on a body when:
Choose an answer
A force acts on it
It moves through certain distance
None of A and B is correct
Both A and B is correct
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Question # 5
Work is always done on a body when:
Choose an answer
A force acts on it
It moves through certain distance
None of A or B is correct
Both A and B is correct
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Question # 6
Work done in lower and bucket into the well is:
Choose an answer
Zero
Positive
Negative
None of these
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Question # 7
Which one is conservative force
Choose an answer
Electric force
Frictional force
Normal force
Air resistance
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Question # 8
The commercial unit of electrical energy is :
Choose an answer
K Watt
KWH
Horse power
Joule
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Question # 9
Tick the conservative force
Choose an answer
Tension in a string
Air resistance
Elastic spring
Frictional force
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Question # 10
The consumption of energy by a 60 W bulb in 2 minutes is:
Choose an answer
2 watt-hour
120 watt-hour
30 watt-hour
None of these
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Question # 11
The space around the earth within it exerts a force of attraction on other bodies of known as:
Choose an answer
Nuclear field
Conservative field
Electric field
Gravitational field
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Question # 12
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:
Choose an answer
0
°
30
°
60
°
90
°
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Question # 13
Work is a:
Choose an answer
Scalar quantity
Vector quantity
Base quantity
None of these
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Question # 14
A 2 kg block is held 1 m above floor for 50 seconds. The work done is:
Choose an answer
Zero
10.2 J
100 J
980 J
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Question # 15
A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against 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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