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← ScienceWhich outcome occurs when an electron’s wave function extends beyond the metal’s surface?
A)Thermionic emission is then increased
B)Quantum tunneling becomes more probable✓
C)Capacitance of junction decreases quickly
D)Band gap energy will significantly widen
💡 Explanation
Quantum tunneling becomes probable because the electron's wave function overlaps a potential barrier; therefore, tunneling occurs more readily because the electron has a non-zero probability of passing through rather than being completely reflected.
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