Electromagnetic WavesHard
Question
An electromagnetic wave of wavelength λo (in vacuum) passes from P towards Q crossing three different media of refractive index μ, 2μ and 3μ respectively as shown in figure. φP and φQ be the phase of the wave at points P and Q. Find the phase difference φQ - φP. [Take : μ = 1]
Options
A.0
B.
C.
D.π
Solution
Optical path difference between (OPD) P & Q
(O.P.D.) = 2.25λo × 1 +(3.5λo) × 2 + 3λo × 3
= 18.25 λo and ᐃφ =
× ᐃx = 
(O.P.D.) = 2.25λo × 1 +(3.5λo) × 2 + 3λo × 3
= 18.25 λo and ᐃφ =
× ᐃx = Create a free account to view solution
View Solution FreeMore Electromagnetic Waves Questions
The electric field of an electromagnetic wave in free space is given by = 10 cos(107 t + kx)V/m, where t and x are in se...A radioactive sample disintegrates by 10% during one month. How much fraction will disintegrate in four months :-...Two towers on top of two hills are 40 km apart. The line joining them passes 50 m above a hill halfway between the tower...Out of the following options which one can be used to produce a propagating electromagnetic wave?...Consider telecommunication through optical fibers. Which of the following statements is not true?...