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9th Class Physics Chapter 3 Dynamics English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
A mass of a body:
Choose an answer
Decreases when accelerated
Increases when accelerated
Decreases when moving with velocity
None of the above
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Question # 2
Centripetal acceleration of a body is given by formula:
Choose an answer
a
c
=v/r
a
c
=mv
2
/r
a
c
=v/r
2
a
c
=v2/r
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Question # 3
The approximate weight of 80 gram mass on the surface of Earth is
Choose an answer
800 N
80 N
0.8 N
8 N
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Question # 4
Which is unitless quantity:
Choose an answer
Mass
Force
Inertia
Momentum
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Question # 5
A body jumps out of a moving bus. There is a danger for him to fall:
Choose an answer
Towards the moving bus
Away form the bus
In the direction of motion
opposite to the direction of motion
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Question # 6
Which of the following is the unit of momentum?
Choose an answer
Nm
kgms
-2
Ns
Ns
-1
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Question # 7
Gravitational pull of earth is called:
Choose an answer
Weight
Mass
Force
Tension
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Question # 8
Friction is due to
Choose an answer
Roughness
Shape
Smoothness
None
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Question # 9
A ball of mass 1 kg moving wih velocity 2 ms
-1
its momentum will be;
Choose an answer
1 Ns
2 Ns
0.5 Ns
4 Ns
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Question # 10
The velocity and acceleration of the body moving with uniform speed in a circular path will be:
Choose an answer
In same direction
In opposite direction
Mutually perpendicular
Equal
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Question # 11
The product of mass and _______ is called momentum;
Choose an answer
Velocity
Force
Acceleration
None
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Question # 12
Rocket works on principle of ______________
Choose an answer
Action Reaction
Law of inertia
Mass energy
Nil
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Question # 13
When a block a place on the surface its weight produce.
Choose an answer
Tension
Momentum
Inertia
Normal reaction
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