JEE Main 2023 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 11 April 2023, Shift 1, Physics Q51

Question 51 of 90 in this shift, Physics question 21 of 30, Section B.

A monochromatic light is incident on a hydrogen sample in ground state. Hydrogen atoms absorb a fraction of light and subsequently emit radiation of six different wavelengths. The frequency of incident light is

x \times 10^{15}

Hz. The value of

x

is ___________. (Given

h = 4.25 \times 10^{-15}

eVs)

Official answer

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
30 Jan 2024, Shift 1 · Q60A electron of hydrogen atom on an excited state is having energy $E_n = -0.85$ eV. The maximum number of allowed transitions to lower…EasyNumerical value
12 Apr 2023, Shift 1 · Q48A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be:MediumSingle correct
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.