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+// Example 5.27
+// Computation of (a)resposivity (b)output current and (c)multiplication factor
+// Page no 488
+
+clc;
+clear;
+close;
+
+//Given data
+e=0.7;                  // Quantum efficiency
+c=3*10^8;               // Speed of light
+h=6.62*10^-34           // Planck constant
+E=1.5*10^-19;           // Energy of photons
+lambda=0.85*10^-6       // Wavelength of laser source
+P=0.6*10^-6;            // Incident light power
+e1=1.6*10^-19;          // Electronic charge
+I=10*10^-6;             // Output current of the device                
+
+// (a) Responsivity
+R=e*(lambda*e1)/(h*c);                       
+
+// (b) Photocurrent
+Ip=R*P;
+
+// (c) Multiplication factor
+M=I/Ip
+
+//Display result on command window
+printf("\n Responsivity R (A/W) = %0.3f  ",R);
+printf("\n Output current Ip (microA) = %0.3f  ",Ip*10^6);
+printf("\n Multiplication factor M = %0.0f  ",M);
+
+//Calculation mistake in (b)Phtocurrent in the book