//Ex1_6

clc;

//Given:

wavelength=1.5*10^-10;
h=6.62*10^-34;
c=3*10^8;

//solution:

e=(h*c)/wavelength;// energy in J
e1=e/(1.6*10^-19);// energy in eV

printf("The energy in eV is = %f ",e1)