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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 29 - Atomic Structure > An atom emits a spectral line of wavelength λ when an electron makes a transition between levels of energy E1 and E2. Which expression correctly relates λ,E1 and E2 ?

An atom emits a spectral line of wavelength λ when an electron makes a transition between levels of energy E1 and E2. Which expression correctly relates λ,E1 and E2 ?

An atom emits a spectral line of wavelength λ when an electron makes a transition between levels of energy E1 and E2. Which expression correctly relates λ E1 and E2 ?