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Online Tests
Physics 9th Class English Medium Unit 6 Online Test MCQs With Answers
Question # 1
A body OF mass 10 kg taken to height of 5m:
Choose an answer
P.E = 500 J
P.E = 50 J
P.E = 5 J
P.E = 5000 J
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Question # 2
Energy cannot be destroyed however it can be converted into some other forms. This is known as:
Choose an answer
Law of heat exchange
Law of conservation of energy
Law of conservation of momentum
None of these
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Question # 3
The speed of light is equal to:
Choose an answer
3 x 10
5
ms
-1
3 x 10
8
ms
-1
3 x 10
9
ms
-1
3 x 10
2
ms
-1
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Question # 4
The tendency of doing work is called :
Choose an answer
Time
Energy
Force
Area
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Question # 5
Einstein's mass-energy equation relation is:
Choose an answer
E =1/2 mc
2
E =mc
2
E =m
2
c
E = 2 mc
2
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Question # 6
The work done will be zero when the angle between the force and the displacement is:
Choose an answer
45
°
60
°
90
°
180
°
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Question # 7
If a force F makes an angle θ with the direction of motion of the force, then the formula for the work done will be:
Choose an answer
W = FS
W = FS cosθ
W = FS sinθ
W = FS tanθ
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Question # 8
If f = 40 N is applied and bus is move 1m than work is :
Choose an answer
40 J
60 J
80 J
No work
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Question # 9
The large unit of work is:
Choose an answer
Kilowatt
Kilo joul
Mega joul
Both B and C
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Question # 10
Which one of the following converts light energy into electrical energy?
Choose an answer
Electric Bulb
Electric generator
Photocell
Electric cell
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Question # 11
A body possesses if it is capable to do work:
Choose an answer
Energy
Power
Force
All
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Question # 12
Which pair of physical quantities has same SI unit?
Choose an answer
energy , power
power , work
energy , work
work , momentum
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Question # 13
Formula of Gravitational potential energy is:
Choose an answer
mgh
mg/h
1/2 mv
2
None of these
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