Question # 1

The mass of Earth is

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6 x 1018 kg

6 x 1020 kg

6 x 1022 kg

6 x 1024 kg

GPS system consists of earth satellites:

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4

20

24

30

Velocity of the body moving in upward direction from the contre of the earth.

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Increases

Decrease

Remain constnat

None of these

Value of 'g' on surface of moon is:

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1.62 ms^-2

3.7 ms^-2

9.2 ms^-2

10 ms^-2

The value of g on moon's surface is 1.6 ms^-2. What will be the weight of a a 100 kg body on the surface of the moon?

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100 N

160 N

1000 N

1600 N

The first man who gave the idea of gravity:

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Hero

Einstein

Newton

Faraday

The orbital velocity of a satellite revolving at height 'h' above the surface of Earth is given by

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The first man who came up with the idea of gravity was?

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Issac Newton

Einstein

Faraday

J,S Joseph

Weight of the body is due to the :

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Gravitation force

Centripetal force

Centrufugal force

All of the above

The orbital speed of a low orbit satellite is:

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Zeri

8 ms^-1

800 ms^-1

8000 ms^-1

The radius R of the earth is:

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6 x 10¹⁸m

6.4 x 10⁶m

6.4 x 10⁸m

6.4 x 10¹²m

Moon is a _____________ satellite.

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Natural

Artificial

Not manmade

Nil

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