JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 8 April 2024, Shift 1, Physics Q39

Question 39 of 90 in this shift, Physics question 9 of 30, Section A.

A mixture of one mole of monoatomic gas and one mole of a diatomic gas (rigid) are kept at room temperature (

27^\circ

C). The ratio of specific heat of gases at constant volume respectively is:

(1) $\frac{3}{2}$
(2) $\frac{3}{5}$ Official answer
(3) $\frac{7}{5}$
(4) $\frac{5}{3}$

Official answer

Option 2

NTA final key.

Chapter: Kinetic Theory
Topic: Kinetic Theory of Gases
Idea tested: Law of Equipartition

Same idea in other shifts

Asked 3× in all

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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 42 of the 174 JEE Main shifts held from 2017 to 2026.