JEE Main 2022PhysicsAtomic PhysicsEasyMCQ

JEE Main 2022 — Atomic Physics Question with Solution

JEE Main 2022 (25 Jul Shift 2)

Question

Hydrogen atom from excited state comes to the ground by emitting a photon of wavelength λ. The value of principal quantum number n of the excited state will be :

( R: Rydberg constant)

Choose an option

Show full solutionCorrect option: B
Correct answer
BλRλR-1

Step-by-step explanation

When an electron jumps from a nth orbit to ground state, using Rydberg formula,

1λ=R1n12-1n22

In this case, n1=1 and n2=n. Therefore,

⇒1λ=R112-1n2⇒n=λRλR-1

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About this question

This is a previous-year question from JEE Main 2022, covering the Atomic Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.