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clear
//
//
//
//Variable declaration
h=6.63*10^-34; //planck's constant(J-sec)
e=1.602*10^-19; //charge of electron(c)
L=10^-10; //width(m)
m=9.11*10^-31; //mass of electron(kg)
//Calculations
E1=h^2/(8*m*e*L^2); //least energy(eV)
//Result
printf("\n least energy is %0.3f eV",E1)
printf("\n answer in the book is wrong")
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