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Saturday, 31 October

JEE Main · Physics · Nuclei

Q-Value Calculation

JEE Main asked Q-Value Calculation 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2023. It belongs to Nuclear Binding Energy, in Nuclei (Physics). The longest wait between two years asking it was 1 year.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2022
last in 2023
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.050.10’170’200’210.03’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 20221 of 24
  • 20210 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Fission q from binding energy per nucleon
  • Energy released in alpha decay

Difficulty

Easy 2Medium 0Hard 0

1 of the 2 questions had a numerical answer.

Every question

All 2 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 12 Apr 2023, Shift 1 · Q60A common example of alpha decay is 92238U⟶ 90234Th+2He4+Q^{238}_{92}\mathrm{U} \longrightarrow\, ^{234}_{90}\mathrm{Th} + {}_{2}\mathrm{He}^{4} + Q Given :…EasyNumerical value
  2. 24 Jun 2022, Shift 1 · Q45Nucleus A is having mass number 220 and its binding energy per nucleon is 5.6 MeV. It splits in two fragments 'B' and 'C' of mass numbers…EasySingle correct

Shifts: 24 Jun 2022, Shift 1, 12 Apr 2023, Shift 1.

Same topic

Other ideas in Nuclear Binding Energy

Nuclear Binding Energy has 11 ideas JEE Main has asked; 8 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas