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One projectile after deviating from its ...

One projectile after deviating from its path starts moving round the earth in a circular path of radius equal to nine times the radius of earth R. Its time period is

A

`2 pi sqrt(R/g)`

B

`27xx2pi sqrt(R/g)`

C

`pi sqrt(R/g)`

D

`0.8xx3pi sqrt(R/g)`

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The correct Answer is:
B
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