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9th Class Physics Chapter 6 Work and Energy English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
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 # 2
A temperature rise in the environment disturbs life called:
Choose an answer
Air pollution
Land pollution
Noice pollution
Thermal pollution
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Question # 3
If W stands for work, F stands for force and S stand for displacement, than mathematical work is defined as
Choose an answer
W = P x S
W = F x v
W = F x r
W = F x S
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Question # 4
In Einstin's mass energy equation, c is the :
Choose an answer
Speed of sound
Speed of light
Speed if volume
None of these
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Question # 5
The energy possessed by a body due to height is called:
Choose an answer
P.E
K.E
Both
None
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Question # 6
P.E is equal to:
Choose an answer
mgh
1/2 mv
2
W x F
None of these
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Question # 7
If the velocity of a body becomes double, then its kinetic energy will:
Choose an answer
Remain the same
Become double
Become four time
Become half
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Question # 8
Formula of Gravitational potential energy is:
Choose an answer
mgh
mg/h
1/2 mv
2
None of these
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Question # 9
Running water possess energy:
Choose an answer
Kinetic
Potential
Elastic Potential energy
Gravitational potential energy
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Question # 10
A crate is moved by pulling the rope attached to it. it moves 10 m on straight horizontal read by a force of 100 N. How much work will be done when the rope is making an angle of 30° with the road?
Choose an answer
5 Joules
86 Joules
707 Joules
866 Joules
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Question # 11
If the velocity of the body becomes double then its kinetic energy will:
Choose an answer
Remain the same
Become double
Become four times
Become half
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Question # 12
The work done will be zero when the angle between the force and the distance is:
Choose an answer
45
o
90
o
60
o
180
o
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Question # 13
If mass of body is 10 kg travelling with speed of light, how much energy is generated?
Choose an answer
E = 9 × 1017 J
E = 9 × 1015 J
E = 9 × 1018 J
E = 9 × 1016 J
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