The frequency of revolution of an electron in the $n^{\text{th}}$ orbit of a hydrogen atom is

Which of the following statements about the Bohr model of the hydrogen atom is false?

The frequency of revolution of an electron revolving in the $n^{th}$ orbit of an $H$-atom is proportional to:

The ratio of the time periods of the revolution of the electrons in the second and third excited states of a hydrogen atom is

$A$ particular hydrogen-like ion emits radiation of frequency $2.92 \times 10^{15} \text{ Hz}$ when it makes a transition from $n=3$ to $n=1$. The frequency in $\text{Hz}$ of radiation emitted in the transition from $n=2$ to $n=1$ will be: (in $\times 10^{15}$)

In a hydrogen atom,if $r_n$ is the radius of the $n^{th}$ orbit and $L_n$ is the orbital angular momentum,then which of the following relations is correct?