If an electron in a hydrogen atom jumps from the third orbit to the second orbit, it emits a photon of wavelength \lambda. When it jumps from the second to the first orbit, the corresponding wavelength of the photon will be

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If an electron in a hydrogen atom jumps from the third orbit to the second orbit, it emits a photon of wavelength λ. When it jumps from the second to the first orbit, the corresponding wavelength of the photon will be

‌‌
5λ
27
‌‌
7λ
20
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16λ
9
‌‌
20λ
7

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