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Online Tests
Physics 9th Class English Medium Unit 6 Online Test MCQs With Answers
Question # 1
Einstein's mass-energy equation is
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E = mc
E = mc2
E = 2mc
E = m2c
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Question # 2
Ability of body to do work due to its height is called.
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potential energy
kinetic energy
gravitational potential energy
elastic potential energy
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Question # 3
The energy of a body during the motion is called:
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Potential energy
Kinetic energy
Elastic P.E.
Heat energy
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Question # 4
The work done in lifting a brick of mass 2 kg through a height of 5 m above ground will be:
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2.5 J
10 J
50 J
100 J
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Question # 5
If the velocity of a body becomes double, then its kinetic energy will:
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Remain the same
Become double
Become four time
Become half
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Question # 6
Formula of work is:
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F X S
F X V
F/S
S/F
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Question # 7
Fossil fuels are usually:
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Carbon di oxide
Hydrogen
Hydrocarbons
Carbon monoxide
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Question # 8
The tendency of doing work is called :
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Time
Energy
Force
Area
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Question # 9
The potential energy of a body of mass 'm' placed at a height 'h' above the surface of   earth is equal to
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P.E. = mg
P.E. = mgh
P.E. = 3mgh
P.E. = 2mgh
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Question # 10
The kinetic energy of the body of mass 1000 kg moving a speed of 20 ms
-1
will be:
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2 x 10
2
J
2 x 10
3
J
2 x 10
5
J
2 x 10
8
J
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Question # 11
The work done in lifting a brick of mass 2 kg through a height of 5 m above the ground will be:
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2.5 J
12.5 J
50 J
100 J
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Question # 12
What will be the magnitude of work if a force of 25N pulls a stone through a distance of 5 m in its directions
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25 J
50 J
75 J
125 J
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Question # 13
1 mega watt is equal to:
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10
2
W
10
3
W
10
5
W
10
6
W
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