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Near the earth's surface time period of ...

Near the earth's surface time period of a satellite is 4 hrs. Find its time period if it is at the distance '4R' from the centre of earth :-

A

`32 hrs.`

B

`(1/(8sqrt(2)))` hrs.

C

`8sqrt(2)` hrs.

D

`16` hrs.

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The correct Answer is:
A
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