Thermodynamic and Statistical Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 37 - 39 of 64

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Question number: 37

» Thermodynamic and Statistical Physics » Fermi Gases

Appeared in Year: 2014

MCQ▾

Question

The pressure of a nonrelativistic free Fermi gas in three – dimension depends, at Equation , on the density of fermions Equation as. (June – 2014)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 38

» Thermodynamic and Statistical Physics » Ferromagnetism

Appeared in Year: 2012

MCQ▾

Question

The magnetization M of a ferro-magnet, as a function of the temperature T and the magnetic field H, is described by the equation Equation . In these units, the zero – field magnetic susceptibility in terms of Equation is given by, (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 39

» 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

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