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JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 5 April 2026, Shift 2, Physics Q34

Question 34 of 75 in this shift, Physics question 9 of 25, Section A.

An ideal gas at pressure

P

and temperature

T

is expanding such that

PT^3

= constant. The coefficient of volume expansion of the gas is __________.

(1) $\frac{2}{T}$
(2) $\frac{1}{T}$
(3) $\frac{4}{T}$ Official answer
(4) $\frac{3}{T}$

Official answer

Option 3

NTA final key.

Chapter: Thermal Properties of Matter
Topic: Thermal Expansion
Idea tested: Volume Expansion Coefficient of Ideal Gas

Same idea in other shifts

Asked 2× in all

27 Aug 2021, Shift 1 · Q7An ideal gas is expanding such that $\mathrm{PT}^3=$ constant. The coefficient of volume expansion of the gas is :MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.