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Saturday, 31 October

JEE Main · Physics · Thermal Properties of Matter

Thermal Stress

JEE Main asked Thermal Stress 4 times in 4 of the 108 shifts Lumi analysed, in 2017, 2021 and 2023. It belongs to Thermal Expansion, in Thermal Properties of Matter (Physics). The longest wait between two years asking it was 4 years, across 2018 and 2019, which Lumi has no shifts for. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2017
last in 2023
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2017, 2021 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.510.83’170’200.07’210’220.07’230’240’250’26

Raw count: 2017: 1 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 0 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
  • 20220 of 24
  • 20212 of 24
  • 20200 of 12
  • 20171 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.

  • Thermal force in clamped rod
  • Thermal expansion to cancel pressure compression

Difficulty

Easy 3Medium 1Hard 0

1 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. 8 Apr 2023, Shift 2 · Q52A steel rod of length 1 m and cross sectional area 10−410^{-4} m2^2 is heated from 0∘0^\circC to 200∘200^\circC without being allowed to…EasyNumerical value
  2. 25 Feb 2021, Shift 1 · Q9Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : When a rod lying…EasyAssertion–reason
  3. 4 Aug 2021, Shift 1 · Q16A steel wire of 1 mm2^2 cross-sectional area having Young’s modulus 2×10112\times10^{11} N/m2^2 is stretched between two fixed points at a…EasySingle correct
  4. 2 Apr 2017 (offline) · Q9An external pressure P is applied on a cube at 0°C so that it is equally compressed from all sides. K is the bulk modulus of the material…MediumSingle correct

Shifts: 2 Apr 2017 (offline), 25 Feb 2021, Shift 1, 4 Aug 2021, Shift 1, 8 Apr 2023, Shift 2.

Same topic

Other ideas in Thermal Expansion

Thermal Expansion has 10 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas