Thermodynamic and Statistical Physics-Classical and Quantum Statistics (CSIR Physical Sciences): Questions 3 - 4 of 4

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Question number: 3

» Thermodynamic and Statistical Physics » Classical and Quantum Statistics

Appeared in Year: 2011

MCQ▾

Question

Consider a system of N non – interacting spins, each of which has classical magnetic moment of magnitude Equation . The Hamiltonian of this system in an external magnetic field Equation is Equation

where Equation is the magnetic moment of the Equation spin. The magnetization per spin at temperature T is: (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 4

» Thermodynamic and Statistical Physics » Classical and Quantum Statistics

Appeared in Year: 2012

MCQ▾

Question

The dispersion relation of phonons in a solid is given by Equation . The velocity of the phonons at large wavelength is, (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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