List of top Physics Questions on Atomic Spectra asked in KEAM

Magnitude and direction of acceleration changes for:
Which force holds the nucleons together in the nucleus of the atom?
The transition of an atom from $ n = \infty $ to $ n = 3 $ represents:
Minimum wavelength of Brackett series corresponds to transition from $ n_1 $ to $ n_2 $, where $ n_1 $ and $ n_2 $ are respectively...
The spectral series of the hydrogen atom that lies in the visible region of the electromagnetic spectrum