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 associated with an e.m. wave in vacuum is given by 40 cos (kz - 6 × 10-8t), where E, z and t are in v...A radioactive sample disintegrates by 10% during one month. How much fraction will disintegrate in four months :-...Match the List-I with List-II List-I List-II A Radio-wave I is produced by Magnetron value B Micro-wave II Due to change...An electromagnetic wave goin through vaccum is described by E = E0 sin(kx - ωt); B = B0 sin(kx - ωt). Then...Electromagnetic waves is invented by :-...