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In a hydrogen like atom, when an electron jumps from the M-shell to the L-shell, the wavelength of emitted radiation is λ . If an electron jumps from N-shell to the L-shell, the wavelength of emitted radiation will be:

1. λ 16 25
2. λ 20 27
3. λ 25 16
4. λ 27 20

Correct answer: λ 27 20

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