List of top Physics Questions on Atomic Spectra asked in JEE Main

The ratio of momentum of the photons of the $1^{\text{st}}$ and $2^{\text{nd}}$ line of Balmer series of Hydrogen atoms is $\alpha/\beta$. The possible values of $\alpha$ and $\beta$ are:-
What will be the ratio of the wavelength of the 3rd line of the Paschen Series to the 2nd line of the Balmer series of H-atom?
For a hydrogen atom, the ratio of the largest wavelength of the Lyman series to that of the Balmer series is:
The longest wavelength associated with Paschen series is: (Given $R_H = 1.097 \times 10^7$ SI unit)
If half life for a radioactive decay reaction is T. Find the time after which \(\frac{7}{8}th\) of initial mass decays
Find the ratio of energies of photons produced due to transition of an electron of hydrogen atom from its (i) second permitted energy level to the first level, and (ii) the highest permitted energy level to the first permitted level.