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+// Example 5.30
+// Computation of value of reflectance 
+// Page no 489
+
+clc;
+clear;
+close;
+
+// Given data
+n1=3.5;                  // Refractive index of silicon
+n2=1;                    // Refractive index of photodiode
+
+//Value of reflectance
+R=((n1-n2)/(n1+n2))^2;
+   
+//Display result on command window
+printf("\n Value of reflectance (R) = %0.2f  ",R);