" Number of distinct spectral line possible during de-excitation,when hydrogen atom in ground state is excited by providing "3.4eV" of energy "

When a hydrogen atom is excited from ground state to first excited state, then

When a hydrogen atom is excited from ground state to first excited state then

when a hydrogen atom is raised from the ground state to an excited state

When greater number of excited hydrogen atoms reach the ground state :

When a hydrogen atom is raised from the ground state to an excited state

In a mixture of He^(o+) gas H atom and He^(o+) ions Are excited to three respective first excited subsepuenly , H atom transfers its total excitation energy to He^(o+) ions by collision .Assuming that Bohr model of an atom is applicable , answer the following question If each hydrogen atom in the ground state of 1.0 mol of H atom is excited by absorbing photon of energy 8.4 eV, 12.09 eV and 15.0 eV of energy then the number of spectral lines emitted is equal to

Ionisation potential of hydrogen atom is 13.6 eV . Hydrogen atom in ground state is excited by monochromatic light of energy 12.1 eV . The spectral lines emitted by hydrogen according to Bohr's theory will be

When greater number of excited hydrogen atoms reach the ground state, then

The ionization energy of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by electromagnetic radiation of energy 12.1 eV. How many spectral lines will be emitted by the hydrogen atoms