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Physics 9th Class English Medium Online Test MCQs With Answers
Question # 1
Convection of heat is a process of heat transfer due to;
Choose an answer
Random motion of molecules
Downward motion of molecules
Upward motion of molecules
Free motion of molecules
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Question # 2
Which of the following is unit of momentum?
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Nm
Kgms
-2
Ns
Ns
-1
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Question # 3
__________ forces have opposite direction:
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Unlike parallel
Parallel
Like parallel
None of these
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Question # 4
The energy stored in a dam is:
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Electric energy
Potential energy
Kinetic energy
Thermal energy
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Question # 5
Rate of change of velocity is known as.
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Acceleration
Speed
Velocity
Distance
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Question # 6
The net torque acting on a rotating body with uniform speed is:
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0
1
2
5
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Question # 7
If we increase the length of spanner the torque produced will be
Choose an answer
Increased
Decreased
Constant
Zero
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Question # 8
The formula of momentum is:
Choose an answer
P=Fa
P=mv
F=ma
F=mg
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Question # 9
Velocity of the body moving in upward direction from the contre of the earth.
Choose an answer
Increases
Decrease
Remain constnat
None of these
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Question # 10
In thermo flask radiation is stopped by using :
Choose an answer
Green color
Transparent
Silver color
Nil
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Question # 11
If no external force acting on a body then such system is called.
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Ideal system
Controlled system
Isolated system
None
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Question # 12
The temperature of a black dull surface on heating :
Choose an answer
Rise Rapidly
Fall Rapidly
Becomes zero
Remain constant
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Question # 13
Significant figures in 0.0010 are.
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One
Two
Three
Four
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