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Friday, 9 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 6 April 2023, Shift 1, Physics Q44

Question 44 of 90 in this shift, Physics question 14 of 30, Section A.

A source supplies heat to a system at the rate of 1000 W. If the system performs work at a rate of 200 W. The rate at which internal energy of the system increases is
  1. (1)500 W
  2. (2)600 W
  3. (3)1200 W
  4. (4)800 WOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Thermodynamics
Topic
First Law of Thermodynamics
Idea tested
First Law Energy Balance

Same idea in other shifts

Asked 2× in all
  1. 6 Apr 2024, Shift 2 · Q39A total of 48 J heat is given to one mole of helium kept in a cylinder. The temperature of helium increases by 2∘C2^\circ\mathrm{C}. The…EasySingle correct

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 42 of the 174 JEE Main shifts held from 2017 to 2026.