An electromagnetic wave of wavelength `lamda_(0)` (in vacuum) passes from P towards Q crossing three difference media of refractive index `mu,2mu` and `3mu` respectively as shown in figure `phi_(P)` and `phi_(Q)` be the phase of the wave at points P and Q. Find the phase difference `phi_(Q)-phi_(P)`. [take `mu=1`]
A
0
B
`(pi)/(4)`
C
`(pi)/(2)`
D
`pi`
Text Solution
Verified by Experts
The correct Answer is:
C
Optical path difference between (OPD) P & Q (O.P.D) `=2.25lamda_(0)xx1+(3.5lamda_(0))xx2+3lamda_(0)xx3=18.25lamda_(0)` and phase difference `Deltaphi=(2pi)/(lamda_(0))xxDeltax=(pi)/(2)`
Topper's Solved these Questions
WAVE OPTICS
ALLEN|Exercise Example 5|1 Videos
WAVE OPTICS
ALLEN|Exercise Example 6|1 Videos
WAVE OPTICS
ALLEN|Exercise Example 3|1 Videos
UNIT & DIMENSIONS, BASIC MATHS AND VECTOR
ALLEN|Exercise Exercise (J-A)|7 Videos
Similar Questions
Explore conceptually related problems
When light of wavelength lambda_(0) in vacuum travels through same thickness ‘t’ in glass and water, the difference in the number of waves is. (Refractive indices ofglass and water are mu_(g) and mu_(w) respectively.)
The potential difference (V_P - V_Q) between the points P and Q in the part of a circuit as shown in figure is
Light of wavelength lambda_(0) in air enters a medium of refractive index n. If two points A and B in this medium lie along the path of this light at a distance x, then phase difference phi_(0) between these two point is
Three charges +q, +q, +2q are arranged as shown in figure. What is the field at point P (center of side AC)
The potential difference (V_p-V_Q) between the points P and Q in the part of a circuit as shown in figure is
P and Q are two capacitors with capacitance 10 mu F and 20 mu F respectively which are connected in series with a battery of value 12V. Find the ratio between the charges and P and Q.
Three conducting spherical shells have charges q,-2q and 3q as shown in figure. Find electric Potential at point P as shown in figure.
_S01_022_Q01.png)
