JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 30 January 2024, Shift 1, Physics Q39

Question 39 of 90 in this shift, Physics question 9 of 30, Section A.

At which temperature the r.m.s. velocity of a hydrogen molecule equal to that of an oxygen molecule at

47\,^\circ\mathrm{C}

(1)20 KOfficial answer
(2)80 K
(3) $-73$ K
(4)4 K

Official answer

Option 1

NTA final key.

Chapter: Kinetic Theory
Topic: Kinetic Theory of Gases
Idea tested: Equating Speeds of Different Gases

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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.