List of top Physics Questions on Bohr’s Model for Hydrogen Atom asked in AP EAPCET

If the ratio of the time periods of the electrons revolving in the first and \(n^{\text{th}}\) orbits of Hydrogen atom is \(1:64\), then the angular momentum of the electron in the \(n^{\text{th}}\) excited state of Hydrogen atom is \((h=\text{Planck's constant})\)
An electron in the hydrogen atom excites from \(2^{nd}\) orbit to \(4^{th}\) orbit, then the change in angular momentum of the electron is \((\text{Planck's constant }h=6.64\times10^{-34}\,\text{J-s})\)