Question # 1

The mass of a body is 1 kg, its mass in deep space is :

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1 Kg

0.5 Kg

0.25 kg

0

The orbital speed of a low orbit satellite is:

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Zero

8 ms^-1

800 ms^-1

8000 ms^-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

42300 km

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 orbital speed of a low orbit satellite is:

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Zeri

8 ms^-1

800 ms^-1

8000 ms^-1

Newton discovered the cause of falling apple in :

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1886

1905

1665

1600

GPS consists of __________ earth satellites.

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30

2

7

24

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

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

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100 N

160 N

1000 N

1600 N

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 g1

1/4 g

Moon is nearly km away from the Earth:

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3,80,000 km

3800 km

3,80 km

38 km

Mass of earth is approximately _________

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3.7 x 10²⁴ kg

25.94 kg

6.0 x 10²²kg

6 x 10²⁴kg

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