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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceDiagram basedEasyData or graph

JEE Main 15 April 2023, Shift 1, Physics Q33

Question 33 of 90 in this shift, Physics question 3 of 30, Section A.

A thermodynamic system is taken through cyclic process. The total work done in the process is :

The figure, in words

P-V diagram (P in Pa on vertical axis, V in m^3 on horizontal axis). Triangular cycle C-D-E: C at (V=2, P=100); vertical line up from C to D at (V=2, P=400); straight line from D down to E at (V=4, P=100); horizontal line from E back to C at P=100. Arrows: C to D, D to E, E to C.
  1. (1)Zero
  2. (2)200 J
  3. (3)100 J
  4. (4)300 JOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Thermodynamics
Topic
Thermodynamic Processes
Idea tested
Cyclic Process Work

Same idea in other shifts

Asked 7× in all
  1. 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
  2. 7 Apr 2025, Shift 1 · Q48An ideal gas has undergone through the cyclic process as shown in the figure. Work done by the gas in the entire cycle is _______…MediumNumerical valueHas a figure
  3. 9 Apr 2024, Shift 2 · Q36A real gas within a closed chamber at 27∘C27^\circ C undergoes the cyclic process as shown in figure. The gas obeys PV3=RTPV^3=RT equation for…HardSingle correctHas a figure
  4. 3 Aug 2021, Shift 1 · Q53An ideal monoatomic gas traverses the cycle ABCD as shown below in the figure. The work done during the cycle is xxPV. The value of xx…EasyNumerical valueHas a figure
  5. 24 Feb 2021, Shift 1 · Q9n mole of a perfect gas undergoes a cyclic process ABCA (see figure) consisting of the following processes. A → B : Isothermal expansion…MediumDiagram basedHas a figure
  6. 24 Feb 2021, Shift 2 · Q5If one mole of an ideal gas at (P1,V1)(P_1, V_1) is allowed to expand reversibly and isothermally (A to B) its pressure is reduced to one-half…HardDiagram basedHas 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. 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.