A 12.9 eV beam of electrons is used to bombard gaseous hydrogen atom at
Channel: Doubtnut
Date: 2020-08-02

A 12.9 eV beam of electrons is used to bombard gaseous hydrogen atom at room temperature. Upto which energy level the hydrogen atoms would be excited?  Calculate the wavelength of the first member of Paschen series and first member of Balmer series.