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← ScienceWhich outcome results when electron energy overcomes the work function?
A)Secondary electron emission increases sharply✓
B)Auger recombination generates heat
C)Spontaneous alpha decay commences immediately
D)Band gap increases drastically
💡 Explanation
Above the work function threshold, incident electrons cause secondary electron emission because of the mechanism of kinetic excitation of other electrons. Therefore a surge occurs, rather than alpha decay or band shifts, which involve differing particle interactions or energy considerations.
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