What Is the Maximum Velocity of a Photoelectron Emitted from a Surface

question 22

Multiple Choice

What is the maximum velocity of a photoelectron emitted from a surface with work function 5.22 eV when illuminated by 200-nm ultraviolet light? (m_electron = 9.11 *10^-31 kg, h = 6.63 *10^-34 J.s, 1 eV = 1.60 *10^-19 J, and 1 nm = 10^-9 m)

• A) 800,000 m/s
• B) 212,000 m/s
• C) 653,000 m/s
• D) 591,000 m/s

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