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A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km. Then, the time period of a satellite orbiting a few hundred kilometres above the earth’s surface  (REarth=6400km) will approximately be 

1/2 h
1 h
2 h
4 h

detailed solution

Correct option is C

T2T1=r2r13/2⇒T2=246400360003/2≅2 hour

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