Find the intensity of EMW wave?

Asked by rajuharan | 12th Mar, 2017, 07:40: PM

Expert Answer:

Intensity is the energy delivered per unit area per unit time.
 
Now, the energy transported by an electromagnetic wave is directly proportional to the square of the amplitude E2, of the wave.
 
Hence, the intensity is begin mathsize 12px style straight I equals 1 half straight E squared over cμ subscript 0 end style
where c is the speed of light and μ0 is the permeability of free space.
 

Answered by Romal Bhansali | 14th Mar, 2017, 10:31: AM