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If a smooth tunnel is dug across a diame...

If a smooth tunnel is dug across a diameter of earth and a particle is released from the surface of earth, the particle oscillate simple harmonically along it
Time period of the particle is not equal to

A

`2pisqrt((R )/(g))`

B

`(2pi)/(sqrt(GM))R^(3//2)`

C

84.6 min

D

None of these

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The correct Answer is:
D
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