Thermodynamic and Statistical Physics-Ising Model (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 3 of 3

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 463 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

Question number: 1

» Thermodynamic and Statistical Physics » Ising Model

Appeared in Year: 2013

MCQ▾

Question

Consider a system of two Ising spins Equation and Equation taking values Equation with interaction energy given by Equation , when it is in thermal equilibrium at temperature T. For large T, the average energy of the system varies as Equation , with C given by,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2

» Thermodynamic and Statistical Physics » Ising Model

Appeared in Year: 2012

MCQ▾

Question

Consider a one – dimensional Ising model with N spins, at very low temperature when almost all the spins are aligned parallel to each other. There will be a few spin flips with each flip costing an energy Equation . In a configuration with Equation spin flips, the energy of the system is Equation and the number of configuration is Equation ; Equation varies from 0 to N. The partition function is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Thermodynamic and Statistical Physics » Ising Model

Appeared in Year: 2011

MCQ▾

Question

A one – dimensional chain consists of a set of N rods each of length Equation . When stretched by a load, each rod can align either parallel or perpendicular to the length of the chain. The energy of a rod is Equation when aligned parallel to the length of the chain and is Equation when perpendicular to it. When the chain is in thermal equilibrium at temperature T, its average length is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

f Page
Sign In