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A hole is bored along a diameter of the ...

A hole is bored along a diameter of the earth and a particle is dropped into it. If R is the radius of the earth and g is the acceleration due to gravity at the surface of the earth, then the time period of oscillation of the particle is

A

`2pisqrt(R/g)`

B

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

C

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

D

none of these

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The correct Answer is:
A
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