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// Scilab Code Ex3d.1: Page-205 (2008)
clc; clear;
D = 200; // Distance between the source and the slit, cm
a = 0.02; // Slit width, cm
x = 0.5; // Position of first minimum, cm
n = 1; // Order of diffraction
lambda = a*x/(D*n); // Wavelength of light used, cm
printf("\nThe wavelength of light used = %4d angstrom", lambda/1e-008);
// Result
// The wavelength of light used = 5000 angstrom
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