JEE Main 2024PhysicsAtomic PhysicsEasyNumerical

JEE Main 2024 — Atomic Physics Question with Solution

JEE Main 2024 (30 Jan Shift 1)

Question

An electron of hydrogen atom on an excited state is having energy En=-0.85 eV. The maximum number of allowed transitions to lower energy level is _______.

Enter your answer

Show full solutionCorrect answer: 6
Correct answer
6

Step-by-step explanation

Energy of nth orbit is given by, En=-13.6n2

⇒-13.6n2=-0.85⇒n=4

No of transition,

=n(n-1)2=4(4-1)2=6

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Atomic Physics chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2024, 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.