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+// Scilab code Ex3.15 : Pg:117 (2008)

+clc;clear;

+omega1 = 0.01;    // Dispersive power of the crown glass convex lens

+omega2 = 0.02;    // Dispersive power of flint glass plano-convex lens

+f1 = 20;    // Focal length of crown glass lens, cm

+f2 = 30;    // Focal length of crown flint lens, cm

+d = (omega1*f2+omega2*f1)/(omega1 + omega2);    // The distance between two achromatic lenses of different material, cm

+// For same material

+printf("\nThe distance between two achromatic lenses of different material = %5.2f cm", d);

+omega1 = 1, omega2 = 1;    

+d = (omega1*f2+omega2*f1)/(omega1 + omega2);    // The distance between two achromatic lenses of same material, cm

+printf("\nThe distance between two achromatic lenses of same material = %2.0f cm", d);

+

+// Result 

+// The distance between two achromatic lenses of different material = 23.33 cm

+// The distance between two achromatic lenses of same material = 25 cm 
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