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 is projected with velocity `v_0` from the surface of the spherical volume to its centre. The minimum value of `v_0` such that it just reaches the centre (assume that there is no resistance on the particle except electrostatic force) of the spherical volume is

A

`sqrt((Qq)/(2piepsilon_0mR))`

B

`sqrt((Qq)/(piepsilon_0mR))`

C

`sqrt((2Qq)/(piepsilon_0mR))`

D

`sqrt((Qq)/(4piepsilon_0mR))`

Text Solution

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The correct Answer is:

D

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