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clear
//
//
//
//Variable declaration
h=6.6*10^-34; //planck's constant(J-sec)
m=9.1*10^-31; //mass of electron(kg)
c=3*10^8; //velocity of light(m/sec)
lamda=0.82*10^-10; //wavelength(m)
//Calculations
E=h*c/lamda; //energy(J)
lamda=h*10^10/sqrt(2*m*E); //wavelength of photo-electron(angstrom)
//Result
printf("\n wavelength of photo-electron is %0.1f angstrom",lamda)
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