CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 161 - 163 of 463

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Question number: 161

» Thermodynamic and Statistical Physics » Phase Equilibria

Appeared in Year: 2011

MCQ▾

Question

A particle is confined to the region by a potential which increases linearly as . The mean position of the particle at temperature T is – (June)

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 162

» Thermodynamic and Statistical Physics » Random Walk

Appeared in Year: 2014

MCQ▾

Question

A random walker takes a step of unit length in the positive direction with probability and a step of unit length in the negative direction with probability. The mean displacement of the walker after n steps is – (December)

Choices

Choice (4) Response

a.

0

b.

c.

d.

Question number: 163

» Electromagnetic Theory » Scalar and Vector Potentials

Appeared in Year: 2014

MCQ▾

Question

A scalar and vector potential and are determine up to a gauge transformation and , where is an arbitrary continuous and differential function of and . If we further impose the Lorenz gauge condition,

Then a possible choice for the gauge function is – (Where are nonzero constants with ) (December)

Choices

Choice (4) Response

a.

b.

c.

d.

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