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clear
//
//
//
//Variable declaration
lamda=7*10**-5 //wavelength(cm)
n=2
mew=1.33 //refractive index
//Calculation
t=(((2*n)+1)*lamda/2)/(2*mew) //thickness of soap film(cm)
//Result
printf("\n thickness of soap film is %0.4f *10**-5 cm",t*10**5)
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