Question # 1

A communication satellite is used ot reflect the signal of.

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Microwaves

Radio waves

y rays

x -rays

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

The diver spin faster when moment of inertia becomes.

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smaller

Greater

Constant

Equal

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

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Small

Large

Zero

None

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

The relation between linear and angular velocity is

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The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

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

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

Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

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

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Torque

Linear momentum

Angular momentum

Force

The moment of inertia is analogue to

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Mass

Weight

Torque

Force

100 radians are equal to.

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57.3^o

75.3^o

573^o

5730^o

A wheel of radius 50 cm having an angular speed of a rad /s have linear speed.

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1.5 m/s

3.5 m/s

2.5 m/s

4.5 m/s

Which is unimportant in describing the satellites orbit.

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Distance of satellite from earth's center

Gravitational constant G

Mass of satellite

Mass of earth

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

The direction of angular velocity of along the

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Tangent at that point

Axis of rotation

Radius towards the centre

Radius away from the centre

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

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