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clear;
clc;
printf("\nEx-6.3\n");
//page no.-185
//given
no=5.9*10^28;.....//free electrons per m^3
m=9.1*10^-31;....//mass of electron
h=6.6*10^-34;....//planck's constant in Js
E=(3*no/%pi)^(2/3)*(h^2)/(8*m*e)......//fermi energy in joule
printf("\nfermi energy is 5.4 eV\n");
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