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//Chapter-1,Example 1_9,Page 1-20
clc()
//Given Data:
u1=1.3 //Refractive index of oil
u2=1.5 //Refractive index of glass
lam1=7*10^-7 //Wavelength of light
lam2=5*10^-7 //Wavelength of light
//Calculations:
//for finding value of n, solve:
//(2n+1)*lam1/2=(2(n+1)+1)*lam2/2
//We get,n=2
n=2
toil=(2*n+1)*lam1/(2*u1*2) //thickness of oil layer
printf('Thickness of oil layer is =%.9f m',toil)
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