JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 9 April 2024, Shift 2, Physics Q41

Question 41 of 90 in this shift, Physics question 11 of 30, Section A.

The temperature of a gas is

-78^\circ

C and the average translational kinetic energy of its molecules is K. The temperature at which the average translational kinetic energy of the molecules of the same gas becomes

2

K is :

(1) $117^\circ C$ Official answer
(2) $127^\circ C$
(3) $-78^\circ C$
(4) $-39^\circ C$

Official answer

Option 1

NTA final key.

Chapter: Kinetic Theory
Topic: Kinetic Theory of Gases
Idea tested: Kinetic Energy and Temp

Same idea in other shifts

Asked 6× in all

4 Apr 2026, Shift 2 · Q33Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: If the average kinetic…EasyAssertion–reason
7 Apr 2025, Shift 2 · Q33The helium and argon are put in the flask at the same room temperature (300 K). The ratio of average kinetic energies (per molecule) of…EasySingle correct
31 Jan 2024, Shift 1 · Q39The parameter that remains the same for molecules of all gases at a given temperature is :EasySingle correct
8 Apr 2023, Shift 2 · Q33The temperature at which the kinetic energy of oxygen molecules becomes double than its value at $27^\circ$ C isEasySingle correct
25 Jul 2022, Shift 1 · Q38Following statements are given : (A) The average kinetic energy of a gas molecule decreases when the temperature is reduced. (B) The…EasyOther

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.