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diff --git a/2198/CH1/EX1.5.1/Ex1_5_1.sce b/2198/CH1/EX1.5.1/Ex1_5_1.sce
new file mode 100755
index 000000000..bb3a3e04d
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+++ b/2198/CH1/EX1.5.1/Ex1_5_1.sce
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+//Ex 1.5.1
+clc;clear;close;
+format('v',6);
+
+//Given : 
+t1=35;//degreeC
+t2=60;//degreeC
+T1=t1+273;//K
+T2=t2+273;//K
+disp("Forbidden gap for Si : ");
+EG1_Si=1.21-3.6*10^-4*T1;//eV
+disp(EG1_Si,"at 35 degree C in eV")
+EG2_Si=1.21-3.6*10^-4*T2;//eV
+disp(EG2_Si,"at 60 degree C in eV")
+disp("Forbidden gap for Ge : ");
+EG1_Ge=0.785-2.23*10^-4*T1;//eV
+disp(EG1_Ge,"at 35 degree C in eV")
+EG2_Ge=0.785-2.23*10^-4*T2;//eV
+disp(EG2_Ge,"at 60 degree C in eV")