A Proton Is in a One-Dimensional Box of Length $\times$ 10^-15 M (I

Multiple Choice

A proton is in a one-dimensional box of length ~ 2 $\times$ 10^-15 m (i.e.,~ size of a nucleus) .What is the approximate ground-state energy in eV?

A) 100 MeV
B) 400 MeV
C) 50 MeV
D) 10 MeV
E) 1 MeV