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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 5 April 2024, Shift 2, Physics Q31

Question 31 of 90 in this shift, Physics question 1 of 30, Section A.

What is the dimensional formula of ab−1ab^{-1} in the equation (P+aV2)(V−b)=RT\left(P+\frac{a}{V^2}\right)(V-b)=RT, where letters have their usual meaning.
  1. (1)[ML2T−2][ML^2T^{-2}]Official answer
  2. (2)[M−1L5T3][M^{-1}L^5T^3]
  3. (3)[M0L3T−2][M^0L^3T^{-2}]
  4. (4)[M6L7T4][M^6L^7T^4]

Official answer

Option 1

NTA final key.

Chapter
Units and Measurements
Topic
Real Gases
Idea tested
Units of VdW Constants

Same idea in other shifts

Asked 2× in all
  1. 27 Aug 2021, Shift 1 · Q31The unit of the van der Waals gas equation parameter ‘a’ in…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.