Wave Optics Flashcards
1
Q
Angular Fringe width beta =
A
λ/d
2
Q
For Diffraction, if path diff = 0, Fringe is
A
bright or maxima is obtained
3
Q
For Diffraction, when path diff = nλ, fringe is
A
dark or minima is obtained
4
Q
For Diffraction, to get minima, path diff
A
asinø = nλ
5
Q
For secondary maxima, asinø =
A
(n+½)λ
6
Q
As the value of n increases intensity
A
increases
7
Q
Interference has _____ slits and _____ no of bright dark bands
A
2; equal
8
Q
Diffraction has _____ slit, _________, & bright dark bands
A
1; central maxima
9
Q
Interference & diffraction are consistent with
A
Principle of conservation of energy
10
Q
Intensity I =
A
I1 + I2 + 2(I1I2)½cosø
11
Q
phase diff Ø =
A
Ø = 2π/λ × path diff
12
Q
β1/β2 =
A
λ1/λ2
13
Q
Radius of waves depends on
A
vτ
14
Q
Intensity =
A
Intensity = (amplitude)²
15
Q
For path diff nλ, interference is
A
constructive, intensity is max
