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An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let λ n , λ g be the de Broglie wavelength of the electron in the n th state and the ground state respectively. Let n Λ be the wavelength of the emitted photon in the transition from the n th state to the ground state. For large n , ( A , B are constants)

1. n Λ ≈ A + 2 n B λ
2. n Λ ≈ A + B λ n
3. 2 n Λ ≈ A + B 2 n λ
4. 2 n Λ ≈ λ Students may find similar question in CP exercise sheet : [ JEE Main, Chapter : Atomic Structure ]

Correct answer: n Λ ≈ A + 2 n B λ

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