By giving energy to a hydrogen atom in energy state n=1. If the potential energy of the atom in n=1 state be `-13.6 eV`, calculate (a) potential enregy in state n=4, (b) energy absorbed by the atom in the transition, and (c) wavelength of radiation emitted during transition from n=4 to n=1 state.

Answer

`-0.85 eV, 12.75 eV, 971 Å`