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Question

Solution by Joshi sir.

$\frac{k q_{1} q_{2}}{{l_{3}}^{2}} = \frac{k q_{2} q_{3}}{{l_{1}}^{2}} = \frac{k q_{3} q_{1}}{{l_{2}}^{2}} l_{1} + l_{2} + l_{3} = L f r o m t h e s e 2 e q u a t i o n s \frac{L \frac{1}{\sqrt{q_{1}}}}{\frac{1}{\sqrt{q_{1}}} + \frac{1}{\sqrt{q_{2}}} + \frac{1}{\sqrt{q_{3}}}}, \frac{L \frac{1}{\sqrt{q_{2}}}}{\frac{1}{\sqrt{q_{1}}} + \frac{1}{\sqrt{q_{2}}} + \frac{1}{\sqrt{q_{3}}}}, \frac{L \frac{1}{\sqrt{q_{3}}}}{\frac{1}{\sqrt{q_{1}}} + \frac{1}{\sqrt{q_{2}}} + \frac{1}{\sqrt{q_{3}}}}$

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