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diff --git a/3828/CH2/EX2.4/Ex2_4.sce b/3828/CH2/EX2.4/Ex2_4.sce
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+
+//Chapter 2 : Diffraction
+
+clear;
+
+//Variable declaration
+a=2*10**-4               //slit width                
+lamda=6*10**-7           //wavelength
+
+//Calculations
+theta=asin(lamda/a)
+TLW=4*theta/10**-2
+theta1=asin(lamda/a)/10**-3
+
+//Result
+mprintf("Total linear width= %.1f cm",TLW)
+mprintf("\nAngular position of the minima= %d*10**-3 radian",theta1)
+