Question # 1

The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is

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850 km

1000 km

6400 km

42,300 km

Moon is our satellite:

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Artificial

Permanent

Natural

Communication

The value we get after rounding 1.47 is

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1.4

1.5

1.47

1.46

The scientist who notice that all the freely falling objects hae same acceleration.

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Einstein

Galileo

Coulomb

Newton

Which of the following do not effect evaporation?

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Temperature

Wind

Volume

Surface area of liquid

1 mega watt is equal to:

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10² W

10³ W

10⁵ W

10⁶W

Friction is caused by :

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Shining surface

Rough surface

Polished surface

Nil

At what angle sin𝜽 and cos𝜽 has same values:

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30^o

45^o

60^o

90^o

What will be the value of β for a solid for which α has a value of 2 x 10^-5 C^-1

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2 x 10^-5 K^-1

6 x 10^-5 K^-1

8 x 10^-15 K^-1

8 x 10^-5K^-1

The devise used to measure the atmosphere pressure is:

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Rain gauge

Vacuum cleaner

Screw gauge

Barometer

The insulator of heat is:

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Cork

Cotton

Wood

All

Moon complete its one revolution around the earth is ___________ DAYS:

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29

27.3

30

21

The bad conductor of Heat is:

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Iron

Copper

Air

Aluminium

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