Question # 1

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

In rotational motion the torque is equal to rate of change of

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Angular velocity

Linear momentum

Angular momentum

Angular acceleration

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

Close orbiting satellites orbit the earth at a height of about

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400 km

4000 km

400 m

400 cm

Satellites are the objects that orbit around the

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Moon

Sun

Earth

Star

The motion of a body moving along a circular path is called.

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Translational motion

Angular motion

Vibratory motion

Linear motion

Which quantity of the following is dimensionless.

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Angular velocity

Centripetal force

Angular acceleration

Angular displacement

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 minimum number of correctly positioned communication satellites to cover whole populated earth is.

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2

3

100

200

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

The diver spin faster when moment of inertia becomes.

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smaller

Greater

Constant

Equal

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

The maximum velocity necessary to put a satellite into orbit is

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7.1 kms-1

7.3 kms-1

7.9 kms-1

8,9 kms-1

The direction of angular velocity is determined.

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Left hands rule

Head to tail rule

Right hand rule

General rule

When a body moves in circular motion, the angle between linear and angular velocity is.

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180^o

90^o

60^o

75.3^o

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

The formula of centripetal acceleration is

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Physics ICS Part 1 Chapter 5 Online Test MCQs With Answers

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