clc// // // //Variable declaration m=9.1*10^-31; //mass of electron(kg) h=6.626*10^-34; //planck's constant lamda=1.66*10^-10; //wavelength(m) //Calculation v=h/(m*lamda); //velocity(m/s) KE=(1/2)*m*v^2; //kinetic energy(eV) //Result printf("\n velocity is %0.0f km/s",v/10^3) printf("\n kinetic energy is %0.2f eV",KE/(1.6*10^-19))