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Saturday, 31 October

JEE Main · Physics · Thermodynamics

Adiabatic T-V and P-T Relations

JEE Main asked Adiabatic T-V and P-T Relations 5 times in 5 of the 108 shifts Lumi analysed, in 2020, 2021, 2022 and 2024. It belongs to Thermodynamic Processes, in Thermodynamics (Physics). The longest wait between two years asking it was 2 years. In 2020 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
5
in 5 shifts
Years
4 of 8
First asked
2020
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170.17’200.03’210.03’220’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 2 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20241 of 18
  • 20230 of 12
  • 20221 of 24
  • 20211 of 24
  • 20202 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: application.

  • Adiabatic temperature ratio from length ratio
  • Change in internal energy in adiabatic compression

Difficulty

Easy 1Medium 4Hard 0

3 of the 5 questions had a numerical answer.

Every question

All 5 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 5 Apr 2024, Shift 2 · Q49During an adiabatic process, if the pressure of a gas is found to be proportional to the cube of its absolute temperature, then the ratio…MediumSingle correct
  2. 29 Jul 2022, Shift 1 · Q53The pressure P1P_1 and density d1d_1 of diatomic gas (γ=75)\left(\gamma = \frac{7}{5}\right) changes suddenly to P2P_2(>P1P_1) and d2d_2…MediumNumerical value
  3. 25 Jul 2021, Shift 1 · Q20A monoatomic ideal gas, initially at temperature T1T_1 is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to…EasySingle correct
  4. 2 Sep 2020, Shift 1 · Q22An engine takes in 5 moles of air at 20∘20^\circC and 1 atm, and compresses it adiabaticaly to 1/10th1/10^{\mathrm{th}} of the original volume.…MediumNumerical value
  5. 9 Jan 2020, Shift 2 · Q21Starting at temperature 300 K, one mole of an ideal diatomic gas (γ=1.4\gamma = 1.4) is first compressed adiabatically from volume V1V_1 to…MediumNumerical value

Shifts: 9 Jan 2020, Shift 2, 2 Sep 2020, Shift 1, 25 Jul 2021, Shift 1, 29 Jul 2022, Shift 1, 5 Apr 2024, Shift 2.

Same topic

Other ideas in Thermodynamic Processes

Thermodynamic Processes has 16 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas