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clear;
clc;
printf("\nEx2.46\n");
//page no.-90
//given
w=10.08*10^-12;...........//work function in ergs
h=6.624*10^-27;...........//planck's constant in ergs-sec
c=3*10^10;................//speed of light in cm/sec
lambda_o=h*c/w............//threshold wavelength in cm
printf("\nthreshold wavelength is 1972 angstrom\n");
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