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diff --git a/2411/CH5/EX5.7/Ex5_7.sce b/2411/CH5/EX5.7/Ex5_7.sce
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+// Scilab Code Ex5.7: Page-286 (2008)
+clc; clear;
+h = 6.62e-034;    // Planck's constant, Js
+c = 3e+008;    // Speed of light, m/s
+e = 1.6e-019;    // Energy quivalent of 1 eV, J
+phi = 4.2*e;    // Work function for material, J
+lambda = 2000e-010;    // Wavelength of incident radiation, m
+E = h*c/lambda;    // Energy of the incidnt radiation, J
+KE_fast = (E - phi)/e;    // Kinetic energy of the fastest photoelectron, eV
+KE_slow = 0;    // Kinetic energy of the slowest photoelectron, eV
+printf("\nThe kinetic energy of the fastest photoelectron = %d eV", KE_fast);
+printf("\nThe kinetic energy of the slowest photoelectron = %d eV", KE_slow);
+V = (E - phi)/e;    // Stopping potential, V
+printf("\nThe stopping potential = %d volt", V);
+
+// Result
+// The kinetic energy of the fastest photoelectron = 2 eV
+// The kinetic energy of the slowest photoelectron = 0 eV
+// The stopping potential = 2 volt 
+\ No newline at end of file