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// Scilab Code Ex15.2 Finding suitable energy for Photoelectric Effect from Na metal: Page-486 (2010)
e = 1.602e-019; // Charge on an electron, C
h = 6.626e-034; // Planck's constant, Js
c = 3.0e+08; // Speed of light in vacuum, m/s
W = 2.3*e; // Work function of Na metal, J
lambda = 2800e-010; // Wavelength of incident light, m
f = c/lambda; // Frequency of the incident light, Hz
E = h*f; // Energy carried by one photon from Planck's law, J
printf("\nThe energy carried by each photon of radiation = %4.2f eV", E/e);
if E > W then
printf("\nThe photoelectric effect is possible..");
else
printf("\nThe photoelectric effect is impossible..");
end
// Result
// The energy carried by each photon of radiation = 4.43 eV
// The photoelectric effect is possible..
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