// Additional solved numerical questions , Example(set 1) 12_b_3 , pg 349 Eg=0.8*1.6*10^-19 //bandgap (in J) (converting eV into J) h=6.625*10^-34 //plancks constant (in J s) c=3*10^8 //speed of light (in m/s) lam=(h*c)/Eg //wavelength printf("wavelength of light emitted (in m)is=") disp(lam)