Question # 1

Room are heated using gas heaters by:

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Conduction only

Convection and radiation

Radiation only

Convection only

The condition of equilibrium are:

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2

3

4

5

Which surface is bad emitter:

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White surface

Black surface

Coloured surface

Silver surface

A solar cell is also called:

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Photo cell

Generator

Battery

None

The product of force and displacement is called;

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Work

Efficiency

Power

Energy

Rooms are heated using gas heaters by

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Conduction only

Convection and radiation

Radiation only

Convection only

Due to _____________ we can watch live programs.

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Natural Satellite

Antenna

Artificial satellite

Nil

The base quantity is.

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Volume

Torque

Mass

Momentum

Bimetal strip is made up of two different metal:

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Copper & iron

Brass & Iron

Brass & Nickel

Copper & Nickel

The unit of torque is:

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Nm^-2

Ncm

Nm^-1

Nm

Transfer of heat by actual movement of molecules form hot place to cold place is called:

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Conduction

Convection

Radiation

None

A body is in neutral equilibrium when its centre of gravity:

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Is at its highest position

Is at the lowest position

Keep its height if displaced

Is situated at its bottom

The orbital speed of a low orbit satellite is

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Zero

8 ms-1

800 ms-1

8000 ms-1

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