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Saturday, 31 October

JEE Main · Physics · Mechanical Properties of Solids

Elastic Energy Density

JEE Main asked Elastic Energy Density 4 times in 4 of the 108 shifts Lumi analysed, in 2020, 2022, 2023 and 2025. It belongs to Elasticity, in Mechanical Properties of Solids (Physics). The longest wait between two years asking it was 2 years.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
4 of 8
First asked
2020
last in 2025
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022, 2023 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170.08’200’210.03’220.07’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 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
  • 20251 of 8
  • 20240 of 18
  • 20231 of 12
  • 20221 of 24
  • 20210 of 24
  • 20201 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: application.

  • Elastic energy density with poisson ratio
  • Ratio of diameters from elastic energy density

Difficulty

Easy 1Medium 3Hard 0

2 of the 4 questions had a numerical answer.

Every question

All 4 questions

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

  1. 2 Apr 2025, Shift 1 · Q46A steel wire of length 2 m and Young's modulus 2.0×1011 N m−22.0\times10^{11}\ \mathrm{N\,m^{-2}} is stretched by a force. If Poisson ratio and…MediumNumerical value
  2. 8 Apr 2023, Shift 1 · Q34An aluminium rod with Young's modulus Y=7.0×1010 N/m2Y = 7.0\times10^{10}\ \mathrm{N/m^2} undergoes elastic strain of 0.04%0.04\%. The energy per unit…EasySingle correct
  3. 26 Jun 2022, Shift 1 · Q53The elastic behaviour of material for linear stress and linear strain, is shown in the figure. The energy density for a linear strain of…MediumNumerical valueHas a figure
  4. 9 Jan 2020, Shift 2 · Q8Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume…MediumSingle correct

Shifts: 9 Jan 2020, Shift 2, 26 Jun 2022, Shift 1, 8 Apr 2023, Shift 1, 2 Apr 2025, Shift 1.

Same topic

Other ideas in Elasticity

Elasticity has 19 ideas JEE Main has asked; 13 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas