JEE Physics · Hard

Kinetic Theory and Thermodynamics: Entropy Advanced MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Entropy AdvancedHardQuestion 31083

Question

The statistical definition of entropy by Boltzmann is:
  1. A
    S = k/Ω
  2. B
    S = k ln Ω
    Correct
  3. C
    S = kΩ
  4. D
    S = k log₁₀Ω

Correct answer

S = k ln Ω

Explanation

S = k ln Ω where Ω = number of microstates. More microstates = more disorder = higher entropy. This is engraved on Boltzmann's tombstone.