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clear
//
//
//
//Variable declaration
h=6.63*10^-34; //planck's constant(J-sec)
e=1.6*10^-19; //charge of electron(c)
L=2.5*10^-10; //width(m)
m=9.1*10^-31; //mass of electron(kg)
n1=1;
n2=2;
n3=3;
//Calculations
E=h^2/(8*m*e*L^2); //energy(eV)
E1=n1^2*h^2/(8*m*e*L^2); //1st least energy(eV)
E2=n2^2*h^2/(8*m*e*L^2); //2nd least energy(eV)
E3=n3^2*h^2/(8*m*e*L^2); //3rd least energy(eV)
//Result
printf("\n 1st least energy is %0.0f eV",E1)
printf("\n 2nd least energy is %0.0f eV",E2)
printf("\n 3rd least energy is %0.0f eV",E3)
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