Electromagnetic TheoryElectromagnetic 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
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
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
Question
The entire range of frequencies for which the mode will propagate is:
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
Question
The dimensions of the waveguide are –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 5
» Electromagnetic Theory » Electromagnetic Waves in Free Space
Appeared in Year: 2016
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.  4  
b. 
 
c.  8  
d. 
