Ising model — CSIR Net PYQ (Question 2)

A Ising model 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 · 5.0 marks

Consider three Ising spins at the vertices of a triangle which interact with each other with a ferromagnetic Ising interaction of strength

J

. The partition function of the system at temperature

T

is given by

(β = \frac{1}{k _{B} T}) :

1 $2 e^{3 β j} + 6 e^{- β j}$
2 $2 e^{- 3 β I} + 6 e^{β J}$
3 $2 e^{3 β J} + 6 e^{- 3 β J} + 3 e^{β J} + 3 e^{- β J}$
4 $(2 cos h β J)^{3}$

Correct answer: Option 1

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About this question

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