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)500 W
(2)600 W
(3)1200 W
(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 3× in all

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 $2^\circ\mathrm{C}$ . The…EasySingle correct
26 Aug 2021, Shift 1 · Q4An electric appliance supplies 6000 J/min heat to the system. If the system delivers a power of 90 W. How long it would take to increase…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 108 of the 174 JEE Main shifts held from 2017 to 2026.