Question # 1

Earth's gravitational force of attraction vanishes at

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6400 km

Infinity

42300 km

1000 km

The bad conductor of Heat is:

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Iron

Copper

Air

Aluminium

More radiation is reflected by the surface:

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White

Coloured

Black

Rough

The speed geostationary satellite with respect to earth is:

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8.33 kms^-1

3.87 ms^-1

32 ms^-1

Zero

Clinical thermometer is used by:

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Astronomers

Doctors

Scientist

Chemists

Significant figures in 0.0010 are.

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One

Two

Three

Four

The slope of distance time graph shows.

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Speed

Displacement

Acceleration

Distance

Unit of thermal conductivity is .

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Wmk

W m^-1 K^-1

Wm

None of these

Water on cooling below 4 ^oC begins to:

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Expand

Contract

Boils

None of these

If W stands for work, F stands for force and S stand for displacement, than mathematical work is defined as

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W = P x S

W = F x v

W = F x r

W = F x S

Moon complete it's one revolution around earth is days:

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22

23

27.3

25

Which of following units is equal to Kgm² s^-2

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Newton

Joule

Watt

Coloumb

Atmospheric pressure will increased if we move on earth:

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Upward

Downward

Left

right

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