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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceTwo statementsEasyConceptual

JEE Main 8 April 2024, Shift 2, Physics Q39

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

Given below are two statements : Statement (I) : The mean free path of gas molecules is inversely proportional to square of molecular diameter. Statement (II) : Average kinetic energy of gas molecules is directly proportional to absolute temperature of gas. In the light of the above statements, choose the correct answer from the options given below :
  1. (1)Both Statement I and Statement II are trueOfficial answer
  2. (2)Both Statement I and Statement II are false
  3. (3)Statement I is true but Statement II is false
  4. (4)Statement I is false but Statement II is true

Official answer

Option 1

NTA final key.

Chapter
Kinetic Theory
Topic
Kinetic Theory of Gases
Idea tested
Mean Free Path

Same idea in other shifts

Asked 6× in all
  1. 5 Apr 2024, Shift 2 · Q39If n is the number density and d is the diameter of the molecule, then the average distance covered by a molecule between two successive…EasySingle correct
  2. 27 Jun 2022, Shift 2 · Q38According to kinetic theory of gases, A. The motion of the gas molecules freezes at 0°C. B. The mean free path of gas molecules decreases…MediumOther
  3. 25 Jul 2021, Shift 2 · Q23A system consists of two types of gas molecules A and B having same number density 2×10252\times10^{25}/m3^3. The diameter of A and B are 10…EasyNumerical value
  4. 16 Mar 2021, Shift 2 · Q7Calculate the value of mean free path (λ\lambda) for oxygen molecules at temperature 27∘C27^\circ\mathrm{C} and pressure 1.01×1051.01\times10^5…EasySingle correct
  5. 2 Sep 2020, Shift 2 · Q9An ideal gas in a closed container is slowly heated. As its temperature increases, which of the following statements are true ? (A) the…MediumOther

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.