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Saturday, 31 October

JEE Main 2024 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 1 February 2024, Shift 2, Physics Q60

Question 60 of 90 in this shift, Physics question 30 of 30, Section B.

A particular hydrogen - like ion emits the radiation of frequency 3×10153\times10^{15} Hz when it makes transition from n = 2 to n = 1. The frequency of radiation emitted in transition from n = 3 to n = 1 is x9×1015\frac{x}{9}\times10^{15} Hz, when x=x = ________.

Official answer

32

NTA final key.

Chapter
Atoms
Topic
Bohr's Atomic Model
Idea tested
Identifying Atomic Number from Spectra

Same idea in other shifts

Asked 2× in all
  1. 9 Jan 2020, Shift 2 · Q19The energy required to ionise a hydrogen like ion in its ground state is 9 Rydbergs. What is the wavelength of the radiation emitted when…MediumSingle correct

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.