List of top Physics Questions on Bohr's model of hydrogen atom asked in TS EAMCET

The radius of first Bohr orbit of hydrogen atom is \(r_o\)\( \AA\). The wavelength (in \(\AA\)) of electron associated with sixth orbit of same atom is

If the wavelength of a spectral line in the Balmer series of hydrogen spectrum is $\frac{7.2}{R}$, then the ratio of the radii of the higher and lower orbits between which the transition of electron takes place is ($R$ - Rydberg constant):