JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 22 July 2021, Shift 2, Physics Q5

Question 5 of 90 in this shift, Physics question 5 of 30, Section A.

What will be the average value of energy for a monoatomic gas in thermal equilibrium at temperature T ?

(1) $k_BT$
(2) $\frac{1}{2}k_BT$
(3) $\frac{3}{2}k_BT$ Official answer
(4) $\frac{2}{3}k_BT$

Official answer

Option 3

NTA final key.

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

Same idea in other shifts

Asked 11× in all

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