blob: a37375d210e8b366d9250d99c79de8ca0248cbc6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
//Chapter-1,Example 1_20_1,Page 1-52
clc()
//Given Data:
i=45*%pi/180 //angle of incidence
u=1.2 //Refractive index of a film
t=4*10^-7 //thickness of film
//Calculations:
//u=sin i/sin r //Snell's law .So,
r=asin(sin(i)/u) //angle of reflection
//Now, condition for dark fringe is
//2ut*cos r=n*lam
lam1=2*u*t*cos(r)/1 //n=1
printf('For n=1 wavelength is =%.10f m \n',lam1)
printf(' This is in the visible spectrum and it will remain absent.\n \n')
lam2=2*u*t*cos(r)/2 //n=2
printf(' For n=2 wavelength is =%.10f m \n',lam2)
printf(' This is not in the visible spectrum \n \n')
|
