The energy levels with transitions for the atom are shown. The transitions corresponding to emission of…

The energy levels with transitions for the atom are shown. The transitions corresponding to emission of radiation of maximum and minimum wavelength are respectively
  1. A, D
  2. B, C
  3. C, D
  4. A, C

Solution

Energy $\quad \mathrm{E}=\frac{\mathrm{hc}}{\lambda} \quad \therefore \mathrm{E} \propto \frac{1}{\lambda}$ In transition A, change in energy is minimum, hence wavelength is maximum. In transition D, Change in energy is maximum, hence wavelength is minimum.

Asked in: MHT CET 2020 (19 Oct Shift 2)

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