Microcanonical Ensemble — CSIR Net PYQ (Question 2)

A Microcanonical Ensemble previous-year question (PYQ) from Statistical Mechanics (CSIR Net). Read the question, check the correct answer, then practise the full topic.

Question 2 of 11 · 3.5 marks

Consider a gas of

N

classical particles in a two-dimensional square box of side

L

. If the total energy of the gas is

E

, the entropy (apart from an additive constant) is

1 $N k_{B} l n (\frac{L ^{2} E}{N})$
2 $N k_{B} l n (\frac{L E}{N})$
3 $2 N k_{B} l n (\frac{L E}{N})$
4 $L^{2} k_{B} l n (\frac{E}{N})$

Correct answer: Option 3

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This Microcanonical Ensemble PYQ is part of the Statistical Mechanics section of CSIR Net. Browse more Microcanonical Ensemble questions or join the PhysicsByAaryan live batch for full conceptual coverage.