JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 12 April 2023, Shift 1, Physics Q48

Question 48 of 90 in this shift, Physics question 18 of 30, Section A.

A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be:

(1)1
(2)2
(3)3Official answer
(4)4

Official answer

Option 3

NTA final key.

Chapter: Atoms
Topic: Bohr's Atomic Model
Idea tested: Number of Spectral Lines

Same idea in other shifts

Asked 5× in all

9 Apr 2024, Shift 2 · Q35A hydrogen atom in ground state is given an energy of $10.2$ eV. How many spectral lines will be emitted due to transition of electrons ?EasySingle correct
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11 Apr 2023, Shift 1 · Q51A monochromatic light is incident on a hydrogen sample in ground state. Hydrogen atoms absorb a fraction of light and subsequently emit…MediumNumerical value
27 Aug 2021, Shift 2 · Q29X different wavelengths may be observed in the spectrum from a hydrogen sample if the atoms are exited to states with principal quantum…EasyNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.