Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's atomic model?

According to Bohr model of atom

In Bohr's model of hydrogen atom ,

In Bohr's model of hydrogen atom ,

Bohrs model of hydrogen atom.

lonization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy 12.1 eV. The spectral lines emitted by hydrogen atoms according to Bohr's theory will be

Derive the energy expression for hydrogen atom using Bohr atom model.