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

question 30

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 %

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