1.

Two pith balls carrying equal charges are suspended from a common point by strings of equal the balls now become       

A. \[\left( \frac{r}{\sqrt[3]{2}} \right)\]          
B.        \[\left( \frac{2r}{\sqrt{3}} \right)\]
C. \[\left( \frac{2r}{3} \right)\]         
D.        \[{{\left( \frac{r}{\sqrt{2}} \right)}^{2}}\]
Answer» B.        \[\left( \frac{2r}{\sqrt{3}} \right)\]


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