JEE Main Physics · Thermal Properties of Matter

Thermal Expansion in JEE Main

Name: Thermal Expansion: JEE Main previous year questions
Creator: Lumi

Thermal Expansion (Physics, Thermal Properties of Matter) came 7 times in 7 of the 42 JEE Main shifts Lumi analysed, across 6 distinct ideas. 3 of them came in 2024–26; it was last asked in 2026.

Questions: 7; in 7 shifts
Ideas asked: 6; 1 asked more than once
Numerical answer: 2; 29% of its questions
Pattern: Asked most years; last asked 2026

Questions each year

In the shifts Lumi analysed for each year.

Difficulty and format

Easy 3Medium 4Hard 0

Format

Single correct4 Q
Numerical value2 Q
Diagram based1 Q

Ideas inside the topic

6 ideas

Thermal Stress2 Q
Bimetallic Strips1 Q
Constant Length Difference1 Q
Volume Expansion Coefficient of Ideal Gas1 Q
Linear Expansion1 Q
Superficial Expansion1 Q

Where it sits

Part of Thermal Properties of Matter, which had 21 questions in all. Thermal Expansion accounts for 33% of them. In Lumi's JEE taxonomy it belongs to Thermodynamics.

Every question

All 7 Thermal Expansion questions

Newest first, each with its options and official answer.

4 Apr 2026, Shift 2 · Q34The temperature of a metal strip having coefficient of linear expansion $\alpha$ is increased from $T_1$ to $T_2$ resulting in increase of…MediumSingle correct
5 Apr 2026, Shift 2 · Q34An ideal gas at pressure $P$ and temperature $T$ is expanding such that $PT^3$ = constant. The coefficient of volume expansion of the gas…MediumSingle correct
4 Apr 2025, Shift 2 · Q31Consider a rectangular sheet of solid material of length $l=9$ cm and width $d=4$ cm. The coefficient of linear expansion is…MediumSingle correct
8 Apr 2023, Shift 2 · Q52A steel rod of length 1 m and cross sectional area $10^{-4}$ m $^2$ is heated from $0^\circ$ C to $200^\circ$ C without being allowed to…EasyNumerical value
25 Jul 2022, Shift 1 · Q54A unit scale is to be prepared whose length does not change with temperature and remains $20$ cm, using a bimetallic strip made of brass…EasyNumerical value
16 Mar 2021, Shift 2 · Q13A bimetallic strip consists of metals A and B. It is mounted rigidly as shown. The metal A has higher coefficient of expansion compared to…EasyDiagram basedHas a figure
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