Which of the plots shown in the figure represents speed $(v)$ of the electron in a hydrogen atom as

Question

Which of the plots shown in the figure represents speed $(v)$ of the electron in a hydrogen atom as a function of the principal quantum number ( $n$ ) ?

Professor PC Thomas Classes · Answer

(a) : Velocity in $n^{	ext {th }}$ orbit is, $v \propto \frac{1}{n}$ So, graph is rectangular hyperbola.