Question # 1

See breeze blows form sear to land during:

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day

night

after noon

morning

The energy of a body during the motion is called:

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Potential energy

Kinetic energy

Elastic P.E.

Heat energy

The unit of density is:

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kg^-1 m^-3

kg m^-1

kgm^-3

kgm^-2

Larger number of slots are made in radiators to increase:

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Surface temperature

Surface area

Both A and B

Nonr

The conduction is due to:

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They have high boiling point

Vibration of atoms

They have high melting point

None of above

A solar cell is also called:

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Photo cell

Generator

Battery

None

_____________ is centre from which its mass is equally distributed:

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Cebtre of mass

Centre of gravity

All of above

None

Which of the substances is the lightest one?

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Copper

Mercury

Aluminium

Lead

Co-efficient of friction between wood and concrete.

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0.63

0.8

1

0.9

.............. is example of vector.

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Length

Force

Mass

Time

F = Kx is mathematical form of which law:

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Law of gravity

Hooke's Law

Einstein's theory

It is just relation

The force with which earth attracts a body towards its center is equal to its

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Mass

Weight

Charge

Radius

When center of gravity is at the highest position body will be in:

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Neutral equilibrium

Stable equilibrium

Unstable equilibrium

None of these

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