JEE Main · Physics · Thermodynamics
Carnot Engine Efficiency
JEE Main asked Carnot Engine Efficiency 2 times in 2 of the 108 shifts Lumi analysed, all in 2022. It belongs to Second Law and Entropy, in Thermodynamics (Physics). In 2022 it came in more than one shift of the same year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 1 of 8
- First asked
- 2022
- the only year
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 2 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 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.
How JEE Main framed it
Numerical value is the usual form. Skill tested: calculation.
- Heat absorbed by carnot engine from work
- Minimum source temperature of heat engine
Difficulty
2 of the 2 questions had a numerical answer.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 27 Jun 2022, Shift 1 · Q51In a carnot engine, the temperature of reservoir is C and that of sink is 200 K. If the workdone by the engine when it…EasyNumerical value
- 26 Jun 2022, Shift 2 · Q55A heat engine operates with the cold reservoir at temperature 324 K. The minimum temperature of the hot reservoir, if the heat engine…MediumNumerical value
Shifts: 26 Jun 2022, Shift 2, 27 Jun 2022, Shift 1.
Same topic
Other ideas in Second Law and Entropy
Second Law and Entropy has 3 ideas JEE Main has asked; 1 of them came up in more than one question.
- Extensive Nature of Entropyonce · 2021
- Second Law Statementsonce · 2021