Physics Test 03

Total Questions: 25

1 - Inertia depends upon

A ) Velocity
B ) Net force
C ) Mass ✅
D ) Force

2 - The turning effect of a force is called

A ) Momentum
B ) Torque ✅
C ) Pressure
D ) Work

3 - When the horse pulls a car, the action is on the

A ) Cart
B ) Earth
C ) Horse
D ) Earth and cart ✅

4 - The resultant of a all the forces acting on a body is called

A ) Force
B ) Friction force
C ) Net force ✅
D ) Gravitational force

5 - Formula to determine centripetal force is

A ) mv²/r ✅
B ) m²v/r
C ) mr²/v
D ) mv/r²

6 - Centripetal force acts ___ to the motion of the body.

A ) Opposite
B ) Parallel
C ) Perpendicular ✅
D ) Upward

10 - Newton's first law of motions is valid only in the absence of

A ) Momentum ✅
B ) Friction
C ) Energy
D ) Force

11 - Which of the following relation is corrects?

A ) F = ma
B ) F= m-a
C ) F= m/a
D ) F= a/m ✅

12 - The mass of a body

A ) Decrease when accelerated
B ) Increases when accelerated ✅
C ) Decreases when moving with high velocity
D ) None of the above

14 - The unit of weight is

A ) Ns ✅
B ) N
C ) Kg
D ) Ns-¹

15 - When the cyclist stop pedaling, bicycle stop due to

A ) Friction
B ) Momentum
C ) Weight ✅
D ) Mass

16 - A boy jump out of a moving bus. There is a danger for him to fall

A ) Towards the moving bus ✅
B ) Opposite to the direction of motion
C ) In the direction of motion
D ) Away from the bus

17 - Weight is measured by

A ) Spring balance ✅
B ) mass
C ) Beam balance
D ) Lever balance

18 - The force that opose the motion of a moving object is called

A ) Momentum
B ) Friction ✅
C ) Power
D ) Work

19 - Newton's first law of motion is valid only in the absence of

A ) Force
B ) Net force ✅
C ) Friction
D ) Momentum

20 - In isolated system the momentum after collision of two bodies is

A ) Increases
B ) Constant
C ) Decreases
D ) Zero ✅

21 - If velocity of the body became double then centripetal force will be

A ) Half
B ) Three time greater
C ) Double
D ) Four time greater ✅

22 - Centripetal acceleration represents as

A ) mv²/r
B ) v²/r ✅
C ) mv/r²
D ) v/r

23 - The study of motion of an object and the cause of its motion is

A ) Kinematics
B ) Dynamics ✅
C ) Mechanics
D ) Light

24 - Inertia depends upon

A ) Speed
B ) Velocity
C ) Mass ✅
D ) Acceleration

25 - The quantity of motion is called

A ) Momentum ✅
B ) Speed
C ) Velocity
D ) Torque