// Scilab code Ex3.11 : Pg:113 (2008) clc;clear; mu_V = 1.55; // Refractive index of violet color mu_R = 1.53; // Refractive index of red color mu_Y = (mu_V + mu_R)/2; // Refractive index of yellow color omega1 = (mu_V - mu_R)/(mu_Y - 1); // Dispersive power of the crown glass convex lens F = 150; // Focal length of the combination of lenses, cm R = 54; // Radius of curvature of the convex lens, cm f1 = R/(2*(mu_Y-1)); // Focal length of the convex lens from thin lens maker formula, cm f2 = F*f1/(f1 - F); // Focal length of the second lens, cm // As omega1/omega2 = -f1/f2, solving for omega2 omega2 = -f2/f1*omega1; // Dispersive power of flint glass printf("\nThe dispersive power of flint glass = %5.3f", omega2); // Result // The dispersive power of flint glass = 0.056