Question # 1

If no external force acting on a body then such system is called.

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Ideal system

Controlled system

Isolated system

None

In velocity the body become double , then centripetal force will be:

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Half

Three times greater

Double

Four times greater

Coefficient of friction between tyre and dry road is.

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0.6

1

0.05

0.2

Co-efficient of friction between glass and glass.

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1.0

0.9

1

0.8

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

Action and Reaction are always on:

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Same body

Different bodies

Any body

None of these

The formula of momentum is:

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P=Fa

P=mv

F=ma

F=mg

A boy jumps out of a moving bus. There is danger for him to fall

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Towards the moving bus

In the direction of motion

away from the bus

Opposite to the direction of motion

A ball of mass 1 kg moving with velocity 2 ms-1, Its momentum will be

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1 Ns

2 Ns

0.5 Ns

4 Ns

All divers need to wear seat belt because of effect of:

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Air resistance

Tensional

Push force

Gravitational

Rate of change of momentum is equal to:

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Mass

Torque

Weight

Force

Inertia depends upon:

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Weight

Mass

Density

Force

The velocity and acceleration of the body moving with uniform speed in a circular path will be:

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In same direction

In opposite direction

Mutually perpendicular

Equal

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Physics 9th Class English Medium Unit 3 Online Test MCQs With Answers

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