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Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 26 June 2022, Shift 2, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

A heat engine operates with the cold reservoir at temperature 324 K. The minimum temperature of the hot reservoir, if the heat engine takes 300 J heat from the hot reservoir and delivers 180 J heat to the cold reservoir per cycle, is ________ K.

Official answer

540

NTA final key.

Chapter
Thermodynamics
Topic
Second Law and Entropy
Idea tested
Carnot Engine Efficiency

Same idea in other shifts

Asked 2× in all
  1. 27 Jun 2022, Shift 1 · Q51In a carnot engine, the temperature of reservoir is 527∘527^\circC and that of sink is 200 K. If the workdone by the engine when it…EasyNumerical value

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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.