clc();
clear;
// To calculate the minimum energy of electron
n=1;    //for minimum energy
h=6.626*10^(-34);
m=9.1*10^-31;   //mass in kg
L=4*10^-10;   //size in m
E1=(n*h^2)/(8*m*L^2);    //energy in j
printf("lowest energy of electron in Joule is");
disp(E1);

//answer given in the book is wrong