Atomic Physics Theory MCQ Question with Answer

Question No : 8
The radius of hydrogen atom, when it is in its second excited state, becomes :

Question No : 9
If Bohr's radius is R₀ then radius of 3rd orbit of hydrigen atom will be:

Question No : 10
In terms of Rydberg Constant R, the wave number of the first Balmer line is :

Question No : 11
For electron moving in nth orbit of the atom, the angular
velocity is proportional to :

Question No : 12
The order of size of nucleus and Bohr radius of an atom respectively are:

Question No : 13
In the lowest energy level of hydrogen atom, electron has the angular momentum:

Question No : 14
Atomic hydrogen is excited to the nth energy level. The maximum number of spectral lines which it can emit while returning to the ground state, is :