An 80-EV Electron Impinges Upon a Potential Barrier 100 EV

Multiple Choice

An 80-eV electron impinges upon a potential barrier 100 eV high and 0.20 nm thick. What is the probability the electron will tunnel through the barrier? (1 eV = 1.60 × 10^-19 J, mproton = 1.67 × 10^-27 kg, = 1.055 × 10^-34 J ∙ s, h = 6.626 × 10^-34 J ∙ s)

A) 0.027%
B) 2.7%
C) 0.27%
D) 2.8 × 10^-4 %
E) 2.0 × 10^-9 %