JEE Main 2026 — Atomic Physics Question with Solution
JEE Main 2026 (06 April Shift 1)
Question
The ratio of momentum of the photons of the and line of Balmer series of Hydrogen atoms is . The possible values of and are:-
Choose an option
Show full solutionCorrect option: D
Correct answer
D and
Step-by-step explanation
The momentum of a photon is given by .
From Rydberg's formula, the wave number is .
For the first line of the Balmer series, the transition is from to .
For the second line of the Balmer series, the transition is from to .
The ratio of the momenta is:
Comparing with , the possible values are and .
Answer: and
From Rydberg's formula, the wave number is .
For the first line of the Balmer series, the transition is from to .
For the second line of the Balmer series, the transition is from to .
The ratio of the momenta is:
Comparing with , the possible values are and .
Answer: and
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This is a previous-year question from JEE Main 2026, 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.