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Saturday, 31 October

JEE Main · Physics · Nuclei

Mass Defect Calculation

JEE Main asked Mass Defect Calculation 5 times in 5 of the 108 shifts Lumi analysed, in 2021, 2024 and 2026. It belongs to Nuclear Binding Energy, in Nuclei (Physics). The longest wait between two years asking it was 3 years. In 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
5
in 5 shifts
Years
3 of 8
First asked
2021
last in 2026
Pattern
Frequent
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2024 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170’200.03’210’220’230.14’240’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 3 in 18 shifts · 2025: 0 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

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

  • 20261 of 9
  • 20250 of 8
  • 20243 of 18
  • 20230 of 12
  • 20220 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Mass defect of nucleus in mev
  • Energy from mass defect

Difficulty

Easy 4Medium 1Hard 0

2 of the 5 questions had a numerical answer.

Every question

All 5 questions

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

  1. 5 Apr 2026, Shift 2 · Q44Assuming the experimental mass of 612C{}^{12}_{6}\mathrm{C} as 12 u, the mass defect of 612C{}^{12}_{6}\mathrm{C} atom is ________…EasySingle correct
  2. 31 Jan 2024, Shift 1 · Q60The mass defect in a particular reaction is 0.4g. The amount of energy liberated is n×107n\times10^7 kWh, where n=n= _______. (speed of light…EasyNumerical value
  3. 8 Apr 2024, Shift 1 · Q46Binding energy of a certain nucleus is 18×10818\times10^8 J. How much is the difference between total mass of all the nucleons and nuclear…EasySingle correct
  4. 5 Apr 2024, Shift 1 · Q59If three helium nuclei combine to form a carbon nucleus then the energy released in this reaction is ________ ×10−2\times10^{-2} MeV. (Given…MediumNumerical value
  5. 3 Aug 2021, Shift 2 · Q12If AA, ZZ and MM represents the number of nucleons, protons and mass of the nucleus respectively, then mass defect ΔM\Delta M is…EasySingle correct

Shifts: 3 Aug 2021, Shift 2, 31 Jan 2024, Shift 1, 5 Apr 2024, Shift 1, 8 Apr 2024, Shift 1, 5 Apr 2026, Shift 2.

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