Wave Optics Flashcards
(14 cards)
1
Q
Equation for doppler effect
A
∆^/^=v/c
2
Q
Relationship b/w intensity and amplitude in interfere
A
I directly pprt A^2
3
Q
Resultant amplitude at a point
A
√[A^2+B^2+2ABcos¢]
4
Q
Rmax/Rmin =
A
A+B/A-B
5
Q
Resultant intensity
A
I=I1+I2+2√I1√I2cos¢
6
Q
Imax/Imin
A
(√I1+√I2)^2/(√I1-√I2)^2 =
(A+B)^2/(A-B)^2
7
Q
When I1=I2; I =
A
4Icos^2¢
8
Q
Path and phase differences for constructive and destructive interference respectively
A
n^, 2nπ [n=0,1, 2,3,..
2n-1 ^/2, 2n-1 π [n=1, 2,3,..
9
Q
Path differennce
A
∆x= S2p-S1p
= yd/D
10
Q
Distance from nth fringe to centre
A
Yn= nD^/d (constructive)
= (2n-1) nD/2d (destructive)
11
Q
Fringe width
A
Beta= ^D/d
12
Q
Angular width
A
Beta/D=^/d
13
Q
When immersed in a medium of refractive index beta becomes
A
Beta/n
14
Q
Reln b/w intensity and slit width
A
Directly proportional
