CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 50 - 52 of 463

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Question number: 50

» Electromagnetic Theory » Interference

Appeared in Year: 2012

MCQ▾

Question

Consider the interference of two coherent electromagnetic waves whose electric field vectors are given by Equation and Equation where Equation is the phase difference. The intensity of the resulting wave is given byEquation , where Equation is the time average ofEquation . The total intensity is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

0

d.

Equation

Question number: 51

» Mathematical Methods of Physics » Poles, Residues & Evaluation of Integrals

Appeared in Year: 2014

MCQ▾

Question

A time – dependent current Equation (where K is a constant) is switched on at Equation in an infinite current – carrying wire. The magnetic vector potential is at a perpendicular distance ‘a’ from the wire. The magnetic vector potential at a perpendicular distance a from the wire is given Equation by – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 52

» Thermodynamic and Statistical Physics » Planck's Distribution Law

Appeared in Year: 2013

MCQ▾

Question

The speed Equation of the molecules of mass m of an ideal gas obeys Maxwell’s velocity distribution law at an equilibrium temperature T. Let Equation denote the components of the velocity and Equation the Boltzmann constant. The average value of Equation where Equation and Equation are constant, is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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