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9th Class Physics Chapter 6 Work and Energy English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
1 MJ=
Choose an answer
10
3
J
10
6
J
10
7
J
10
-3
J
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Question # 2
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 # 3
In a dam the water energy is called:
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Heat energy
Electrical energy
G.P.E
Mechanical enrgy
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Question # 4
Formula of work is:
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F X S
F X V
F/S
S/F
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Question # 5
If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be
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Maximum
Minimum
Zero
None of these
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Question # 6
The energy stored in coal is
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Heat Energy
Kinetic energy
Chemical energy
Nuclear energy
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Question # 7
Work is done when force displace inits own _____________
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Way
Method
Direction
None
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Question # 8
In Einstein's mass-energy equation ,c is the
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Speed of sound
Speed of light
Speed of electron
Speed of Earth
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Question # 9
The ability of a body to do work is known as
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power
energy
kinetic energy
potential energy
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Question # 10
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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Question # 11
If a person is not moving when he lifts a load on his head work is:
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FS
FS Cos𝜽
FS Sin
𝜽
0
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Question # 12
The ratio of useful output to input energy is called:
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Power
Energy
Efficiency
Horse power
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Question # 13
Einstein mass energy equation is:
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E= mc
2
E= m
2
c
E = 1/2 mc
2
2 mc
2
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