JEE Main 2023PhysicsAtomic PhysicsEasyMCQ

JEE Main 2023 — Atomic Physics Question with Solution

JEE Main 2023 (24 Jan Shift 2)

Question

A photon is emitted in transition from n=4 to n=1 level in hydrogen atom. The corresponding wavelength for this transition is (given, h=4×10-15 eV s)

Choose an option

Show full solutionCorrect option: D
Correct answer
D94.1 nm

Step-by-step explanation

Using the relation between energy of photon and wavelength for the transition in the hydrogen atom, we get

hcλ=13.61n12-1n22

⇒4×10-15×3×108λ=13.61-116⇒λ=12×10-7×1613.6×15=94.1×10-9=94.1 nm

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About this question

This is a previous-year question from JEE Main 2023, 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.