JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 26 August 2021, Shift 2, Physics Q14

Question 14 of 90 in this shift, Physics question 14 of 30, Section A.

A refrigerator consumes an average 35 W power to operate between temperature

-10^\circ

C to

25^\circ

C. If there is no loss of energy then how much average heat per second does it transfer ?

(1)35 J/s
(2)263 J/sOfficial answer
(3)298 J/s
(4)350 J/s

Official answer

Option 2

NTA final key.

Chapter: Thermodynamics
Topic: Heat Engines and Refrigerators
Idea tested: Refrigerator COP

Same topic in other shifts

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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.