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 . The Hamiltonian of this system in an external magnetic field is

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

Choices

Choice (4) Response

a.

b.

c.

d.

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 . The velocity of the phonons at large wavelength is, (June)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 5

» Thermodynamic and Statistical Physics » Classical and Quantum Statistics

Appeared in Year: 2016

MCQ▾

Question

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

Choices

Choice (4) Response

a.

b.

c.

d.

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