Question

Linear momentum of an electron in Bohr orbit of H-atom (principal quantum number $n$) is proportional to :

• A. $\frac{1}{n^2}$
• B. $\frac{1}{n}$
• C. $n$
• D. $n^2$

Answer 1

The correct option is C $n$

The angular momentum in a Bohr orbit is given as
$L=mvr=\frac{nh}{2\pi }$

$⟹mv=\frac{nh}{2\pi r}$

$⟹p=mv\propto n$