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+//Chapter 1 : Wave Optics
+
+clear;
+
+//Variable declaration
+lamda=5890*10**-10   //wavelength
+myu=1.33             //refractive index of glass
+n=1                  //first minimum
+r=45                 //angle in degrees
+cos_r=0.707
+
+//Calculations
+t=(n*lamda)/(2*myu*cos_r)/10**-7
+
+//Result
+mprintf("Thickness of the film t= %.3f*10**-4 mm",t) 
+