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Two pith balls carrying equal charges ar...

Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r.Now the strings are rigidly clamped at half the height.The equilibrium separation between the balls now become:

A

`1/sqrt2`

B

`r/(3sqrt2)`

C

`(2r)/sqrt3`

D

`(2r)/sqrt3`

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