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A hydrogen atom is in an excited state of principle quantum  number n. It emits a photon of wavelength λ when it returns to the ground state. The value of n is

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a
λR(λR-1)
b
λ(R-1)λR
c
λRλR-1
d
λ(R-1)

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detailed solution

Correct option is C

hcλ=Rhc1-1n2n=λRλR-1


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