Question # 1

Which machine is used to find acceleration due to gravity?

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Centrifuge

Atwood machine

Hydraulic machine

Washing machine

Inertia depends upon:

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Weight

Mass

Density

Force

Motion of the rocket is the example of which law?

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First law

Second law

Third law

Law of momentum

Rate of change of momentum is equal to:

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Mass

Torque

Weight

Force

How much force is needed to body of mass 10 kg from falling:

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100 N

150 N

200 N

300 N

In which case it is easy for the tyre to roll over:

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Rough ground

Smooth ground

Same

None

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

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Air resistance

Tensional

Push force

Gravitational

The force which complete a body to move in circle is:

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Centripetal force

Centrifugal force

Perpendicular force

Tension

To every action there is always an equal but __________ reaction:

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Same

Parallel

Opposite

Equal

If the mass of body is doubled while keeping the force contant, then acceleration will be:

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Doubled

One half

4 times

One fourth

S.I unit of force is:

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N

Ns

s

None

Mass is measured by:

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Spring balance

Measuring cylinder

Physical Balance

None of these

All forces are example of contract forces except:

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Air resistance

Tensional

Push force

Gravitational

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

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