The ratio of the difference between the first and second Bohr orbit energies to that between second and third Bohr orbit energies is

Ratio off difference in the energies of first orbit and second orbit to that of second and third orbit energies =E2-E1E3-E2For H-atom, Z=1E∝-Z2n2=-1222--1212-1232--1222=34536=34×365=275