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diff --git a/3363/CH3/EX3.1/Ex3_1.sce b/3363/CH3/EX3.1/Ex3_1.sce
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+//Example 3.1, page 74
+clc
+m=1//in kg
+h=6.63*10^-34//Joule-sec
+v=10//in m/sec
+lambda=h/(m*v)
+disp('part a')
+printf("\n De broglie wavelength for v=10m/sec %e m",lambda)
+disp('part b')
+//For KE=100ev
+m=9.1*10^-31
+K=100*1.6*10^-19//in Joules
+lambda=h/sqrt(2*m*K)
+printf("\n De broglie wavelength is %e m",lambda)
+\ No newline at end of file