JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 25 June 2022, Shift 2, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

The ratio of specific heats

\left(\frac{C_P}{C_V}\right)

in terms of degree of freedom (

f

) is given by :

(1) $\left(1+\frac{f}{3}\right)$
(2) $\left(1+\frac{2}{f}\right)$ Official answer
(3) $\left(1+\frac{f}{2}\right)$
(4) $\left(1+\frac{1}{f}\right)$

Official answer

Option 2

NTA final key.

Chapter: Kinetic Theory
Topic: Kinetic Theory of Gases
Idea tested: Gamma and Degrees of Freedom

Same idea in other shifts

Asked 9× in all

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26 Jul 2022, Shift 2 · Q42A gas has $n$ degrees of freedom. The ratio of specific heat of gas at constant volume to the specific heat of gas at constant pressure…EasySingle correct
26 Jun 2022, Shift 1 · Q39A thermally insulated vessel contains an ideal gas of molecular mass M and ratio of specific heats 1.4. Vessel is moving with speed $v$ …MediumSingle correct
17 Mar 2021, Shift 1 · Q8A polyatomic ideal gas has 24 vibrational modes. What is the value of $\gamma$ ?MediumSingle correct
17 Mar 2021, Shift 2 · Q18If one mole of the polyatomic gas is having two vibrational modes and $\beta$ is the ratio of molar specific heats for polyatomic gas…MediumSingle correct
3 Sep 2020, Shift 2 · Q8To raise the temperature of a certain mass of gas by $50^\circ$ C at a constant pressure, 160 calories of heat is required. When the same…MediumSingle correct
4 Sep 2020, Shift 1 · Q8Match the $\mathrm{C_P/C_V}$ ratio for ideal gases with different type of molecules : Molecule Type | $\mathrm{C_P/C_V}$ (A) Monatomic |…EasyMatch the list

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.