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// Scilab Code Ex2.69:: Page-2.51(2009)
clc; clear;
R = 100; // Radius of curvature of plano-convex lens, cm
D15 = 0.590; // Diameter of 15th dark ring, cm
D5 = 0.336; // Diameter of 5th dark ring, cm
p = 10; // Order of 10th Newton ring after 5th ring
lambda = (D15^2-D5^2)/(4*p*R); // Wavelength of light used, cm
printf("\nThe wavelength of light used = %4.0f ansgtrom", lambda/1e-008);
// Result
// The wavelength of light used = 5880 ansgtrom
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