Q 12-12-024NEETJEE MainMedium
The frequency of revolution of the electron in the $n^{\text{th}}$ Bohr orbit varies with $n$ as
Answer: (A) $\dfrac{1}{n^3}$
$f = \dfrac{v}{2\pi r}$ with $v \propto \dfrac{1}{n}$ and $r \propto n^2$, so $f \propto \dfrac{1}{n^3}$.
Solution by Sreeraj P, M.Sc Physics