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clear
//
//
//
//Variable declaration
lamda=6000*10**-8 //wavelength(cm)
n=1
mew=1.33 //refractive index
r=0*%pi/180 //angle of incidence(radian)
//Calculation
t=n*lamda/(2*mew*cos(r)) //thickness of thinnest film(cm)
//Result
printf("\n thickness of thinnest film is %0.4f *10**-5 cm",t*10**5)
printf("\n answer given in the book is wrong")
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