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NEETPhysics-Atomic Structure

NEET Physics Hydrogen Spectrum MCQ Question

Type: MCQ-numerical-Hard-Class 11

Hydrogen atom from excited state comes to the ground by emitting a photon of wavelength λ\lambda. The value of principal quantum number 'n' of the excited state will be : (R : Rydberg constant)

A

λRλR−1\frac{\lambda R}{\lambda R - 1}

B

λRλR−1\frac{\lambda R}{\lambda R - 1}

C

λλR−1\frac{\lambda}{\lambda R - 1}

D

λR2λR−1\frac{\lambda R^2}{\lambda R - 1}

Correct Answer

Option A

Detailed Explanation

The formula for the wavelength of emitted photon is derived from the Rydberg formula for hydrogen.

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