Question # 1

An elevator is moving up with an acceleration equal to 'g' An apparent weight of the body in an elevator is.

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Zero

Equal to real weight

2 mg

3 mg

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

If the are of a circle equals its radius, then the angle subtended at the center will be

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1 degree

One rotation

One radian

Half rotation

When a particle is moving along a circular path its projection along the diameter executes

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Linear motion

Vibratory motion

Rotatory motion

SHM

For angular momentum of system to remain constant, external torque should be.

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Small

Large

Zero

None

The value of angular momentum is maximum when 0 is

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90^o

60^o

75^o

45^o

The moment of inertia is analogue to

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Mass

Weight

Torque

Force

The diver spin faster when moment of inertia becomes.

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smaller

Greater

Constant

Equal

Angular acceleration is produced by

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Power

Torque

Pressure

Force

The direction of angular velocity is determined.

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Left hands rule

Head to tail rule

Right hand rule

General rule

A communication satellite is used ot reflect the signal of.

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Microwaves

Radio waves

y rays

x -rays

The SI unit of angular momentum is

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J.S-2

J.S-1

J.S

J.m

Angular displacement is

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Scalar quantity

Vector quantity

Basic quantity

None of these

In rotational motion the analogous of mass is

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Angular acceleration

Torque

Moment of inertia

Angular momentum

Moment of inertia is measure din

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Kg m2

Kg m-2

Rad s-1

Joule second

The time rate of change of angular displacements called.

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Linear velocity

Linear speed

Angular velocity

Angular speed

If a rocket is accelerating upward with an acceleration of 2 g, an astronaut of weight, mg in the rocket shows apparent weight.

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Zero

Mg

2 mg

3 mg

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Physics Fsc Part 1 Chapter 5 Online Test MCQs With Answers

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