Question # 1

The speed of satellites in GPS is:

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8.73 kms^-1

3.87 ms^-1

32 ms^-1

3.87 kms^-1

Moon complete it's one revolution around earth is days:

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22

23

27.3

25

Force per unit Area is :

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Pressure

Density

Efficiency

Nil

The product of force and distance is :

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Force

Work

Torque

Nil

Newton's law of gravitation resembles with

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1st law of motion

2nd law of motion

3rd law of motion

Law of gravitation

A body is in equilibrium when its

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Acceleration is uniform

Speed is uniform

Speed and acceleration are uniform

Acceleration is zero

Coloured surface is a

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Best emitter

Good emitter

Bad emitter

Wrost emitter

If the distance is doubled between two masses. The gravitational force will decrease:

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4 times

2 times

One forth

One third

Thermos flask, is used to maintain:

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Heat

Temperature

Density

Pressure

Glass and transparent polythene sheets allow radiations of wavelength to pass through them:

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Long

Short

Medium

All

The gravitational force has the ________ relation with the distance between two masses:

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Direct

Inverse

Constant

None

The velocity of geostationary satellites with respect to the Earth is:

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Maximum

Zero

Minimum

100 ms^-1

Larger is the area greater will be:

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Radiation

Transfer of heat

Evaporation

Conduction of heat

All forces are example of contract forces except:

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Air resistance

Tensional

Push force

Gravitational

From following in which device thermostat is used:

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Electroscope

Electric Bell

Electric Iron

Radio

Feathers of bird give good thermal:

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Conduction

Insulation

Convection

None of these

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