Question # 1

International Telecommunication satellite

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4,6,8 and 10 Hz

4,6,11 and 14 GHz

4,6,8 and 12 Hz

4,8,11 and 16 GHz

The formula of centripetal acceleration is

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the angular version of F= ma is

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L = 1w

pi = 1a

l = pi a

f = mv/t

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 product of rotational inertial 'I' and angular velocity ' w' is equal to.

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Torque

Linear momentum

Angular momentum

Force

Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

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The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

A communication satellite is used ot reflect the signal of.

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Microwaves

Radio waves

y rays

x -rays

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

Which quantity of the following is dimensionless.

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Angular velocity

Centripetal force

Angular acceleration

Angular displacement

Which of the following is not directed along the fixed axis of rotation.

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Angular displacement

Angular momentum

Centripetal acceleration

Angular acceleration

How many orbiting satellites from the Global positing system.

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3

12

24

22

The centripetal force is always directed

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Away from the centre along the radius

Along the direction of motion

Opposite to the motion of the body

Towards the centre along the radius

Height of geo stationary orbit of the satellite above the earth is.

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300 km

250 km

400 km

None of these

When a body is whirled in a horizontal circle by means of string, the centripetal force is supplied by

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Mass of body

Velocity of a body

Tension in the string

Centripetal acceleration

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

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Physics ICS Part 1 Chapter 5 Online Test MCQs With Answers

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