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A charge +Q is uniformly distributed in ...

A charge `+Q` is uniformly distributed in a spherical volume of radius R. A particle of charge `+q` and mass m projected with velocity `v_0` the surface of the sherical volume to its centre inside a smooth tunnel dug across the sphere. The minimum value of `v_0` such tht it just reaches the centre (assume that thee is no resistance on the particle except electrostatic force) of he sphericle volume is

A

`sqrt((Qq)/(2piepsi_(o)mR)`

B

`sqrt((Qq)/(piepsi_(o)mR)`

C

`sqrt((2Qq)/(piepsi_(o)mR)`

D

`sqrt((Qq)/(4piepsi_(o)mR)`

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