Photoelectric Effect: a Metal Having a Work Function of 2

question 38

Multiple Choice

Photoelectric effect: A metal having a work function of 2.4 eV is illuminated with monochromatic light whose photon energy is 4.0 eV. What is the maximum kinetic energy of the photoelectrons produced by this light? (h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 2.6 × 10^-19 J
• B) 3.8 × 10^-19 J
• C) 4.7 × 10^-19 J
• D) 5.5 × 10^-19 J
• E) 6.4 × 10^-19 J

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