CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 195 - 197 of 463

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Question number: 195

» Mathematical Methods of Physics » Binomial, Poisson and Normal Distributions

Appeared in Year: 2011

MCQ▾

Question

Consider a Maxwellian distribution of the velocity of the molecules of an ideal gas. Let and denote the most probable velocity and the root mean square velocity, respectively. The magnitude of radio is: (December)

Choices

Choice (4) Response

a.

b.

1

c.

d.

Question number: 196

» Quantum Mechanics » Spin-Statistics Connection

Appeared in Year: 2011

MCQ▾

Question

The Hamiltonian of an electron in a constant magnetic field is given by where is a positive constant and denotes the Pauli matrices. Let and be the unit matrix. Then the operator simplifies to – (June)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 197

» Thermodynamic and Statistical Physics » Phase Space

Appeared in Year: 2011

MCQ▾

Question

Consider the transition of liquid water to steam as water boils at a temperature of 1000 C under a pressure of 1 atmosphere. Which one of the following quantities does not change discontinuously at the transition? - (June)

Choices

Choice (4) Response

a.

The internal energy

b.

The entropy

c.

The specific volume

d.

The Gibbs free energy

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