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Online Tests
ECAT Physics 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
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 # 3
Work is a Quantity
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Vector
Scalar
Non-physical
None of these
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Question # 4
Work is a always done on a body when
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A force acts on it
It moves through certain distance
None of A or B is correct
Both A and B are correct
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Question # 5
The space around the earth in which its gravitational force acts on a body is called
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Electric Field
Gravitational field
Magnetic field
Conservative field
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Question # 6
The space around the earth within it exerts a force of attraction on other bodies of known as:
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Nuclear field
Conservative field
Electric field
Gravitational field
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Question # 7
If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
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Power
Work
Pressure
None of these
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Question # 8
Which force is not a conservative force:
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Frictional force
Gravitational force
Electric force
Elastic spring force
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Question # 9
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 # 10
Area under the force displacement graph gives
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Power
Work
Heat
Energy
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Question # 11
Teh consumption of energy by a 1000 watt heater in half an hour is:
Choose an answer
5 Kwh
0.5 Kwh
2.5 Kwh
3.2 Kwh
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Question # 12
The work done by a force, keeping an object in circular motion with constant speed is:
Choose an answer
Zero J
1 J
0.1 J
0.01 J
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Question # 13
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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Question # 14
When the body is moves against the force of friction on a horizontal plane, the work done by the body is:
Choose an answer
Positive
Negative
Zero
None of these
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Question # 15
1 J = ________?
Choose an answer
10
7
erges
10
-7
erges
10
5
erges
10
-5
erges
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