Three energy levels `L_1,L_2` and `L_3` of a hydrogen atom correspond to increasing values of e

Three energy levels `L_1,L_2` and `L_3` of a hydrogen atom correspond to increasing values of energy i.e., `E_(L_1) lt E_(L_2) lt E_(L_3)` . If the wavelength corresponding to the transitions `L_3` to `L_2, L_2` to `L_1` and `L_3` to `L_1` are `lambda_3, lambda_2` and `lambda_1` respectively then

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