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// Scilab Code Ex5.4: Page-285 (2008)
clc; clear;
h = 6.62e-034; // Planck's constant, Js
c = 3e+008; // Speed of light, m/s
lambda = 2300e-010; // Thereshold wavelength for tungsten, m
phi = h*c/lambda; // Work function for tungsten, J
lambda = 1800e-010; // Wavelength of incident radiation, m
E = h*c/lambda; // Energy of the incidnt radiation, J
KE = E - phi; // Kinetic energy of the ejected photoelectrons, J
printf("\nThe kinetic energy of the ejected photoelectrons = %3.1f eV", KE/1.6e-019);
// Result
// The kinetic energy of the ejected photoelectrons = 1.5 eV
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