Q. The energies of three conservative energy levels L 3 , L 2 a n d L 1 of hydrogen atom are E 0 , 4 E 0 9 a n d E 0 4 respectively. A photon of wavelength λ is emitted for a transition L 3 t o L 1 . What will be the wavelength of emission for transition L 2 t o L 1 ? 1 . 16 λ 31 2 . 27 λ 7 3 . 19 20 λ 4 . λ Share with your friends Share 24 Aarushi Mishra answered this We know that E=hcλBetween L1 and L3 energy difference ∆E=E0-E04=3E04⇒hcλ=3E04 ________1Between L2 and L1 energy difference ∆E=E0-4E09=5E09⇒hcλ'=5E09 ________2Dividing equation 1 and 2hcλhcλ'=3E045E09λ'λ=2720λ'=2720λCheck your option there is some mistake in options -63 View Full Answer