Electromagnetic Theory (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 21 - 23 of 68

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Question number: 21

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2012

MCQ▾

Question

A point charge Equation of mass m is kept at a distance d below a grounded infinite conducting sheet which lies in the xy – plane. For what value of d will the charge remains stationary? (December)

Choices

Choice (4) Response

a.

Equation

b.

There is no finite value of Equation

c.

Equation

d.

Equation

Question number: 22

» Electromagnetic Theory » Interference

Appeared in Year: 2014

MCQ▾

Question

A parallel beam of light of wavelength Equation is incident normally on a thin polymer film with air on both sides. If the film has a refractive indexEquation , then second order bright fringes can be observed in reflection when the thickness of the film is - (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 23

» Electromagnetic Theory » Electrostatics: Gauss's Law and Its Applications

Appeared in Year: 2014

MCQ▾

Question

The electrostatic line of force due to a system of four point charges is sketched below.

The electrostatic lines of force

The Electrostatic Lines of Force

In figure the electrostatic line of force due to a system of four point charges is shown.

At a large distanceEquation , the leading asymptotic behaviour of the electrostatic potential is proportional to – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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