JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 5 April 2024, Shift 2, Physics Q49

Question 49 of 90 in this shift, Physics question 19 of 30, Section A.

During an adiabatic process, if the pressure of a gas is found to be proportional to the cube of its absolute temperature, then the ratio of

\frac{C_P}{C_V}

for the gas is :

(1) $\frac{3}{2}$ Official answer
(2) $\frac{5}{3}$
(3) $\frac{7}{5}$
(4) $\frac{9}{7}$

Official answer

Option 1

NTA final key.

Chapter: Thermodynamics
Topic: Thermodynamic Processes
Idea tested: Adiabatic T-V and P-T Relations

Same idea in other shifts

Asked 5× 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 108 of the 174 JEE Main shifts held from 2017 to 2026.