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Question

A geostationary satellite is orbiting at a height 6R above the surface of earth. What is the period of rotation of another satellite at a height 2.5 R from the earths surface?

A
63 hrs
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B
24 hrs
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C
12 hrs
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D
62 hrs
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Solution

The correct option is D 62 hrs
Distance of satellite from centre of earth are 7R and 3.5R respectively. Time period geostationary satellite.
T2T1=(R2R1)3/2
T2=24(3.5R7R)3/2=62hrs.

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