Question # 1

When a hammer raised up its energy will be:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

The number of forces that can be added by head to tail rule are

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2

3

4

Any Number

Hydraulic press in works on:

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Pascal's law

Hook's law

Archimedes law

Principle of floatation

The kinetic energy of a body of mass 2 kg is 25 J. Its speed is:

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5 ms^-1

12.5 ms^-1

25 ms^-1

50 ms^-1

Leslie's cube is filled with

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Cold water

Hot water

Mercury

Air

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

The force with which Earth attracts the object towards its center is known as

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Force

Weight

Mass

Gravity

Co-efficient of friction between wood and concrete.

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0.63

0.8

1

0.9

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

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Zero

Half

Double

4 Times

Central heating systems in buildings operate by

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Conduction

Radiation

Convection

Condensation

In which of the following state molecules do not leave their position:

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Solid

Liquid

Gas

Plasma

_____________ can neither be created nor be destroyed.

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Light

Force

Energy

Weight

Co-efficient of friction between iron and iron is:

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1.0

0.62

0.9

1.2

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