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A uniformly charged sphere of charge Q a...

A uniformly charged sphere of charge Q and radius R is placed at some height from ground surface and sphere is fixed. Now a charged particle of mass m and charge q is released form rest just below to sphere what will be speed of particle after travelling Y-direction

A

`sqrt(2gy)`

B

`sqrt(2kQqy/mR(R+y))`

C

`sqrt(2gy+ 2kQqy/mR(R+y))`

D

`sqrt(gy+ kQqy/mR(R+y))`

Text Solution

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The correct Answer is:
C
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