Question # 1

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

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22

23

27.3

25

Anything that rotates around a planet is called:

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Star

Sun

Moon

Satellite

Moon is ____ satellite.

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Natural

Communications

Artificial

Geostationary

________ is the height of an object or place above sea level.

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Altitude

Depth

Sun

Moon

Mass of earth is Me is :

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Me = 6× 1024 kg

6× 1024 kg

7× 1024 kg

6× 1024 Mg

A body is placed at height 'h' above the surface of the Earth.The value of 'g' is given by

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gh = Me/(R + h)2

gh = GMe/(R +h)2

gh = GMe/R2h

The unit of gravitational constnat is:

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Nm² kg

Nm²kg^-2

Nm²kg^-1

N - m²

The orbital speed of a low orbit satellite is:

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Zeri

8 ms^-1

800 ms^-1

8000 ms^-1

In SI units, the value of gravitational constant 'G' is

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6.673 x 10-9 Nm2 kg-2

6.673 x 10-10 Nm2 kg-2

6.673 x 10-11 Nm2 kg-2

6.673 x 10-12 Nm2 kg-2

The earth attracts us due to its __________ mass:

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Little

Zero

Small

Large

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