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A Metal Having a Work Function of 2

Question 26

Multiple Choice

A metal having a work function of 2.8 eV is illuminated with monochromatic light whose photon energy is 3.9 eV. What is the threshold frequency for photoelectron production? (h = 6.626 × 10-34 J ∙ s, 1 eV = 1.60 × 10-19 J)


A) 6.8 × 1014 Hz
B) 2.7 × 1014 Hz
C) 7.6 × 1014 Hz
D) 8.5 × 1014 Hz
E) 9.4 × 1014 Hz

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