Question # 1

___________ varies with height.

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Weight

Pressure

Mass

Energy

Those objects that conduct electricity are:

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Conductors

Insulators

Semi conductOrs

None of these

in isolated system the momentum after collision of two bodies.

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Increase

Constnat

Decrease

Zero

Speed of the satellites of GPS around earth is:

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3.87 ms^-1

387 kms^-1

3.87 kms^-1

38.7 kms^-1

The value of absolute zero kelving temperature is:

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273^oC

273^oK

273^oF

-273^oC

Heat reflected form the body depends upon :

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Colour and form

Form and speed

Color and speed

None

Amount of heat that flows in unit time is called:

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Rate of flow of heat

Q/t

Conductivity

Both A and B

Two forces of 2N and 4N are acting in opposite directions, Their resultant force will be

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2 N

4 N

6 N

8 N

To every action there is always an equal but __________ reaction:

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Same

Parallel

Opposite

Equal

Paratrooper while coming down attains a velocity called.

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Variable velocity

Uniform velocity

Average velocity

Terminal velocity

Transfer of heat by the actual movement of molecules from one place to the other is called

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conduction

convection

radiation

waves

Kinetic energy is possessed by a body by:

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Virtue of motion

Height

Rest

Nil

The unit of stress is:

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Newton

Pascal

Nm^-2

m³

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