Question # 1

The formula of torque is:

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L= F x E

E = F x t

t = F x L

E = F x L

The gravitational field exist _________ the earth.

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One direction

Upward

All aorund

Downward

Mass of earth is Me is :

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Me = 6× 1024 kg

6× 1024 kg

7× 1024 kg

6× 1024 Mg

Good conductor is :

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Air

Wood

Iron

None

During recent years the percentage of __________ increased considerably on earth:

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Carbon dioxide

Nitrogen

Oxygen

Methane

Sin 45 is equal to:

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Zero

0.5

0.707

1

The ratio of useful output to input energy is called:

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Power

Energy

Efficiency

Horse power

Which one is more elastic ?

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Rubber

Steel

Copper

All has equal values

The unit of stress is:

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Newton

Pascal

Nm^-2

m³

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

Graph is plotted between ........ variable.

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1

2

3

4

How many scales of measurement of temperature are?

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One

Two

Three

Four

Fossil fuels are usually:

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Carbon di oxide

Hydrogen

Hydrocarbons

Carbon monoxide

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