Physics · 2013
NEET 2013 · 5 May · Code W · Q23
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…
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 :

Official answer
(2)
$\displaystyle \left(\frac{\mathrm{r}}{\sqrt[3]{2}}\right)$
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NEET (UG) 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.