Electromagnetic Theory (CSIR Physical Sciences): Questions 25  27 of 55
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 389 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 250.00 or
Question number: 25
» 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. 

Question number: 26
» Electromagnetic Theory » Reflection and Refraction
Appeared in Year: 2014
Question
A plane electromagnetic wave incident normally on the surface of a material is partially reflected. A measurement on the standing wave in the front of the interface shows that the ratio of the electric field amplitude at the maxima and the minima is 5. The ratio of the reflected intensity to the incident intensity is (December)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 27
» Electromagnetic Theory » Scalar and Vector Potentials
Appeared in Year: 2014
Question
A scalar and vector potential and are determine up to a gauge transformation and , where is an arbitrary continuous and differential function of and . If we further impose the Lorenz gauge condition,
Then a possible choice for the gauge function is – (Where are nonzero constants with ) (December)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
