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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceDiagram basedMediumData or graph

JEE Main 4 April 2024, Shift 1, Physics Q39

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

P-T diagram of an ideal gas having three different densities ρ1,ρ2,ρ3\rho_1, \rho_2, \rho_3 (in three different cases) is shown in the figure. Which of the following is correct :

The figure, in words

P (vertical) vs T (horizontal) graph with three straight lines of different slopes; steepest labelled rho1, middle rho2, least steep rho3.
  1. (1)ρ1<ρ2\rho_1 < \rho_2
  2. (2)ρ2<ρ3\rho_2 < \rho_3
  3. (3)ρ1=ρ2=ρ3\rho_1 = \rho_2 = \rho_3
  4. (4)ρ1>ρ2\rho_1 > \rho_2Official answer

Official answer

Option 4

NTA final key.

Chapter
Kinetic Theory
Topic
Thermodynamic Processes
Idea tested
Isochoric Process Analysis

Same topic in other shifts

All Thermodynamic Processes questions
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  6. 3 Apr 2025, Shift 2 · Q33An ideal gas exists in a state with pressure P0\mathrm{P_0}, volume V0\mathrm{V_0}. It is isothermally expanded to 4 times of its initial…MediumSingle correct

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.