सही विकल्प है (D) \(\frac 13\)
\(F = \frac {kq_1q_2}{r^2}\)
\(F \ \text{ v/s }\ \frac 1{r^2}\)
\(\frac{kq_1q_2}{kq_2q_3} = \frac{\tan 30^\circ}{\tan 60^\circ}\)
\(\frac{q_1}{q_3} = \frac{\frac 1 {\sqrt 3}}{\sqrt 3}\)
\(\frac{q_1}{q_3} = \frac 1 {\sqrt 3} \times \frac 1{\sqrt 3} \)
\(\frac{q_1}{q_3} = \frac 13\)
