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+clc;
+clear;
+h=4.135*10^-15 //plancks constant in eVs
+c=3*10^8 //in m/s
+EgGe=0.67 //in eV
+EgSi=1.124 //in eV
+EgGaAs=1.42 //in eV
+EgSiO2=9 //in eV
+
+//Calculation
+lamda1=(h*c)/EgGe/10^-6 //in micro-m
+lamda2=(h*c)/EgSi/10^-6 //in micro-m
+lamda3=(h*c)/EgGaAs/10^-6 //in micro-m
+lamda4=(h*c)/EgSiO2/10^-6 //in micro-m
+
+mprintf("Wavelength of radiation for germanium= %1.2f micro-m\n",lamda1)
+mprintf("Wavelength of radiation for silicon= %1.2f micro-m\n",lamda2)
+mprintf("Wavelength of radiation for gallium-arsenide= %1.2f micro-m\n",lamda3)
+mprintf("Wavelength of radiation for SiO2= %1.2f micro-m\n",lamda4)