# Electromagnetic Theory-Electromagnetic Waves in Free Space (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 5 of 6

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## Question number: 1

» 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: 2

» Electromagnetic Theory » Electromagnetic Waves in Free Space

Appeared in Year: 2011

MCQ▾

### Question

A plane electromagnetic wave is propagating in a lossless dielectric. The electric field is given by , where c is the speed of light in vacuum, , A and are constant and and are unit vectors along the x and z – axes. The relative dielectric constant of the medium, and the constant A are – (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Passage

The magnetic field of the mode of a rectangular waveguide of dimensions as shows in the figure is given by , where and are in cm.

## Question number: 3 (1 of 2 Based on Passage) Show Passage

» Electromagnetic Theory » Electromagnetic Waves in Free Space

MCQ▾

### Question

The dimensions of the waveguide are –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 4 (2 of 2 Based on Passage) Show Passage

» Electromagnetic Theory » Electromagnetic Waves in Free Space

MCQ▾

### Question

The entire range of frequencies for which the mode will propagate is:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 5

» Electromagnetic Theory » Electromagnetic Waves in Free Space

Appeared in Year: 2016

MCQ▾

### Question

A particle with charge moves with a uniform angular velocity in a circular orbit of radius in the plane, around a fixed charge , which is at the centre of the orbit at . Let the intensity of radiation at the point be and at be . The ratio , for , is: (December)

### Choices

Choice (4) Response

a.

b.

c.

8

d.

4

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