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+// Scilab Code EX3.45:: Page-3.58 (2009)
+clc;clear;
+lambda = 5500e-010; // Wavelength of light used, m
+a = 0.01; // Diameter of objective of telescope, m
+f = 3.0; // Focal length of tlescope objective, m
+// For telescope, the limit of resolution,
+// theta = x/f = 1.22*lambda/a, solving for x
+x = 1.22*lambda/a*f; // Distance between centres of imgaes of the two stars
+
+printf("\nThe distance between centres of imgaes of the two stars = %4.2e m", x);
+
+// Result
+// The distance between centres of imgaes of the two stars = 2.01e-04 m