JEE Main 2021PhysicsAtomic PhysicsMediumMCQ

JEE Main 2021 — Atomic Physics Question with Solution

JEE Main 2021 (26 Feb Shift 1)

Question

If λ1 and λ2 are the wavelengths of the third member of Lyman and first member of the Paschen series respectively, then the value of λ1:λ2 is :

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Show full solutionCorrect option: A
Correct answer
A7:135

Step-by-step explanation

1λ1=R112-142

1λ2=R132-142

λ1λ2=19-1161-116=79×15

λ1λ2=7135

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About this question

This is a previous-year question from JEE Main 2021, 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.