Physics MCQs for Class 9 with Answers
If the force of 25 N is acting along the string to balance the weight then tension in string is
25 N
50 N
Zero
None
If the weight body is greater then tension then body will.
Move upward
move downward
not move
None
Momentum is defined as the product of
Mass and acceleration
Force and acceleration
Mass and velocity
Force and velocity
A mass of a body:
Decreases when accelerated
Increases when accelerated
Decreases when moving with velocity
None of the above
Which of the following material lowers friction when pushed between metal plates:
Water
Fine marble poder
Air
Oil
If radius of circle is doubled then centripetal acceleration becomes:
Doubled
Three times
Four times
Half times
If the acceleration is 10 m/s2 and mass 10kg:
F = 99N
F = 100 Kg
F = 100 m/s2
F =100 N
in isolated system the momentum after collision of two bodies.
Increase
Constnat
Decrease
Zero
Rate of change of momentum is equal to:
Mass
Torque
Weight
Force
Motion of the rocket is the example of which law?
First law
Second law
Third law
Law of momentum
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