What is the expression for the value of n of a particle of mass m in a one-dimensional box of length L such that the separation between neighboring levels is equal to the mean energy of thermal m?
A) E = n² \pi² \hbar²}}2mL²}} B) E = n² \pi² \hbar²}}2mL}} C) E = n \pi² \hbar²}}2mL²}} D) E = n \pi² \hbar²}}2mL}}
