Question # 1

Anything that rotates around a planet is called:

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Star

Sun

Moon

Satellite

The Mars has value of g

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25.94 m/sec2

3.73 m/sec2

1.62 m/sec2

8.87 m/sec2

The unit of gravitational constnat is:

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Nm² kg

Nm²kg^-2

Nm²kg^-1

N - m²

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

The value of gravitational constant is SI unit is

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0.673 x 10-10

6.673 x 10-11

4.32 x 10-9

5.32 x 10-11

The velocity of geostationary satellites with respect to Earth is

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Vo

2Vo

Zero

1/2 Vo

Speed of the satellites of GPS around earth is:

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3.87 ms^-1

387 kms^-1

3.87 kms^-1

38.7 kms^-1

GPS consists of __________ earth satellites.

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30

2

7

24

At the surface of Earth, the acceleration due to gravity 'g' is measured by using the formula

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g = GMe/R

GMe/R2

g = 2GMe/R2

g = GMe/2R

Magnetic force is an example of :

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Action at a distance

Force

Torque

Nil

Earth's gravitational force of attraction vanishes at

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6400 km

Infinity

42300 km

1000 km

Moon is our satellite:

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Artificial

Permanent

Natural

Communication

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