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Saturday, 31 October

JEE Main · Physics · Kinetic Theory

Gamma and Degrees of Freedom

JEE Main asked Gamma and Degrees of Freedom 9 times in 9 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2025 and 2026. It belongs to Kinetic Theory of Gases, in Kinetic Theory (Physics). The longest wait between two years asking it was 3 years. In 2020, 2021 and 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
9
in 9 shifts
Years
5 of 8
First asked
2020
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2025 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170.17’200.07’210.10’220’230’240.13’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 2 in 12 shifts · 2021: 2 in 24 shifts · 2022: 3 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

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

  • 20261 of 9
  • 20251 of 8
  • 20240 of 18
  • 20230 of 12
  • 20223 of 24
  • 20212 of 24
  • 20202 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: recall.

  • Statement i/ii on ideal gas internal energy
  • Match list on gas type and heat capacity ratio

Difficulty

Easy 3Medium 6Hard 0

Every question was multiple choice.

Every question

All 9 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 2026, Shift 1 · Q32Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Statement I: Change in internal…MediumTwo statements
  2. 7 Apr 2025, Shift 1 · Q33Match the LIST-I with LIST-I LIST-I | LIST-II A. Triatomic rigid gas | I. CpCv=53\frac{C_p}{C_v} = \frac{5}{3} B. Diatomic non-rigid gas | II.…MediumMatch the list
  3. 26 Jun 2022, Shift 1 · Q39A thermally insulated vessel contains an ideal gas of molecular mass M and ratio of specific heats 1.4. Vessel is moving with speed vv…MediumSingle correct
  4. 25 Jun 2022, Shift 2 · Q36The ratio of specific heats (CPCV)\left(\frac{C_P}{C_V}\right) in terms of degree of freedom (ff) is given by :EasySingle correct
  5. 26 Jul 2022, Shift 2 · Q42A gas has nn degrees of freedom. The ratio of specific heat of gas at constant volume to the specific heat of gas at constant pressure…EasySingle correct
  6. 17 Mar 2021, Shift 2 · Q18If one mole of the polyatomic gas is having two vibrational modes and β\beta is the ratio of molar specific heats for polyatomic gas…MediumSingle correct
  7. 17 Mar 2021, Shift 1 · Q8A polyatomic ideal gas has 24 vibrational modes. What is the value of γ\gamma ?MediumSingle correct
  8. 4 Sep 2020, Shift 1 · Q8Match the CP/CV\mathrm{C_P/C_V} ratio for ideal gases with different type of molecules : Molecule Type | CP/CV\mathrm{C_P/C_V} (A) Monatomic |…EasyMatch the list
  9. 3 Sep 2020, Shift 2 · Q8To raise the temperature of a certain mass of gas by 50∘50^\circC at a constant pressure, 160 calories of heat is required. When the same…MediumSingle correct

Shifts: 3 Sep 2020, Shift 2, 4 Sep 2020, Shift 1, 17 Mar 2021, Shift 2, 17 Mar 2021, Shift 1, 25 Jun 2022, Shift 2, 26 Jun 2022, Shift 1, 26 Jul 2022, Shift 2, 7 Apr 2025, Shift 1, 5 Apr 2026, Shift 1.

Same topic

Other ideas in Kinetic Theory of Gases

Kinetic Theory of Gases has 22 ideas JEE Main has asked; 14 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas