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JEE Main 2021 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 26 February 2021, Shift 2, Physics Q27

Question 27 of 90 in this shift, Physics question 27 of 30, Section B.

1 mole of rigid diatomic gas performs a work of

\frac{Q}{5}

when heat Q is supplied to it. The molar heat capacity of the gas during this transformation is

\frac{xR}{8}

. The value of

x

is ________. [R = universal gas constant]

Official answer

25

NTA final key.

Chapter: Thermodynamics
Topic: First Law of Thermodynamics
Idea tested: Molar Heat Capacity in Polytropic Processes

Same idea in other shifts

Asked 2× in all

24 Jun 2022, Shift 2 · Q59A monoatomic gas performs a work of $\frac{Q}{4}$ where Q is the heat supplied to it. The molar heat capacity of the gas will be ________R…MediumNumerical value

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.