Question # 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

The value of g at a height one Earth's radius above the surface of the Earth is

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2 g

1/2 g

1/3 g

1/4 g

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

42300 km

Earth revolves around the:

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Moon

Sun

Glaxy

None

Near the earth surface the gravitational field strength is:

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1 N kg^-1

10 N kg^-1

100 N kg^-1

101 N kg^-1

Magnetic force is an example of :

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Action at a distance

Force

Torque

Nil

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 mass of Earth is

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6 x 1018 kg

6 x 1020 kg

6 x 1022 kg

6 x 1024 kg

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

At the surface of the earth value of 'g' is measured by using formula:

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g=GMe/R

g = GMe/R²

g = 2GMe/R²

g = GMe/2 R

The value of gravitational constant "G" is Nm² kg^-2

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6.67 x 10^-21

6.67 x 10^-11

6.67 x 10^-23

6.67 x 10¹¹

The value of 'g' is greater at:

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Moon

Hills

Sea leavel

Desert

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