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A geo-stationary stellite orbits around ...

A geo-stationary stellite orbits around the earth in a circular orbit of radius 36,000km. Then, the time period of a spy stellite orbitting a few hundred km above the earth's surface `(R_(earth) = 6400km)` will approximately be

A

`0.2//h`

B

1h

C

2h

D

4h

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