Q 12-12-036JEE MainJEE Main 2025 (28 Jan, Shift 2)Easy
The frequency of revolution of the electron in Bohr's orbit varies with $n$, the principal quantum number, as
Answer: (D) $\dfrac{1}{n^3}$
In the Bohr model $v \propto \dfrac{1}{n}$ and $r \propto n^2$. Frequency of revolution:
$$f = \frac{v}{2\pi r} \propto \frac{1/n}{n^2} = \frac{1}{n^3}$$
Solution by Sreeraj P, M.Sc Physics