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// Scilab code Ex4.7 : Pg:146 (2008)
clc;clear;
D = 80; // Distance between the source and the screen, cm
d = 0.018/2; // Separation between two coherent sources, cm
n = 4; // Number of the fringe
x_n = 1.08; // Distance of nth bright fringe from the center of central fringe, cm
// As x_n = n*Lambda*D/(2*d), solving for Lambda
Lambda = x_n*2*d/(n*D); // wavelength of light, Angstorm
printf("\nThe wavelength of light used = %4.0f angstrom", Lambda/1e-008);
// Result
// The wavelength of light used = 6075 angstrom
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