Thermodynamic and Statistical Physics-Classical and Quantum Statistics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 3 - 5 of 5

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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 isEquation

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

Question number: 5

» Thermodynamic and Statistical Physics » Classical and Quantum Statistics

Appeared in Year: 2016

MCQ▾

Question

Consider a gas of Equation classical particles in a two – dimensional square box of side Equation . If the total energy of the gas is Equation , the entropy (apart from an additive constant) is: (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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