# Electromagnetic Theory (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 8 - 11 of 68

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## Question number: 8

» Electromagnetic Theory » Electromagnetic Waves in Free Space

Appeared in Year: 2014

MCQ▾

### Question

A light source is switched on and off at a constant frequency. An observer moving with a velocity with respect to the light source will observe the frequency of the switching to be – (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 9

» Electromagnetic Theory » Gauss Law and Applications

Appeared in Year: 2012

MCQ▾

### Question

Consider a hallow charged shell of inner radius and outer radius. The volume charge density is (k is a constant) in the region. The magnitude of the electric field produced at distance is –

### Choices

Choice (4) Response

a.

for all

b.

for and for

c.

for and for

d.

for and for

## Question number: 10

» Electromagnetic Theory » Magnetostatics » Ampere's Theorem

Appeared in Year: 2012

MCQ▾

### Question

The magnetic field at a distance R from a long straight wire carrying a steady current I is proportional to – (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 11

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

Appeared in Year: 2014

MCQ▾

### Question

Consider an electromagnetic wave at the interface between two homogeneous dielectric media of dielectric constant and. Assuming and no charge on the surface, the electric field vector and the displacement vector in the two media satisfy the following inequalities – (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

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