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JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 13 April 2023, Shift 2, Physics Q38

Question 38 of 90 in this shift, Physics question 8 of 30, Section A.

The initial pressure and volume of an ideal gas are

P_0

and

V_0

. The final pressure of the gas when the gas is suddenly compressed to volume

\frac{V_0}{4}

will be : (Given

\gamma

= ratio of specific heats at constant pressure and at constant volume)

(1) $P_0$
(2) $4P_0$
(3) $P_0(4)^{\gamma}$ Official answer
(4) $P_0(4)^{\frac{1}{\gamma}}$

Official answer

Option 3

NTA final key.

Chapter: Thermodynamics
Topic: First Law of Thermodynamics
Idea tested: Adiabatic P-V Relation

Same idea in other shifts

Asked 2× in all

8 Apr 2024, Shift 1 · Q37Two different adiabatic paths for the same gas intersect two isothermal curves as shown in P-V diagram. The relation between the ratio…MediumSingle correctHas a figure

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.