Question # 1

Solar cell is are also known as:

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Electric cell

Photo Cell

Sun cells

Nuclear cells

If a force F makes an angle θ with the direction of motion of the force, then the formula for the work done will be:

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W = FS

W = FS cosθ

W = FS sinθ

W = FS tanθ

One Megawatt is equal to :

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1 × 106 w

1 × 102 kw

1015 w

Nil

Work is done when force displace inits own _____________

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Way

Method

Direction

None

If velocity of a body becomes half that its energy K.E will be decrease to:

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Zero

Half

Double

4 Times

The S.I unit of efficiency is :

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J/s

Nm

watt

It has no unit

Kilowatt - hour is unit of _____________

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Power

Energy

Work

K.e

The energy stored in coal is

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Heat Energy

Kinetic energy

Chemical energy

Nuclear energy

When a body is lifted through a height h, the work donw on it appears in the form of its.

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Kinetic energy

Potential energy

Elastic energy

Geothermal energy

The rate of doing work is called :

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Power

Work

Efficiency

None of above

How many components are there of a solar heating system?

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2

3

4

5

The energy possessed by a body due to height is called:

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P.E

K.E

Both

None

The source of energy that can be renewed are called:

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Renewable source

Non-renewable

They RAE Naturally found

None

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