When Ultraviolet Photons with a Wavelength of 3

question 19

Multiple Choice

When ultraviolet photons with a wavelength of 3.45 × 10^-7 m are directed at the surface of an unknown metal in vacuum, electrons with a maximum kinetic energy of 1.52 eV are emitted from the surface. What is the work function of the metal?

• A)3.60 eV
• B)3.11 eV
• C)2.59 eV
• D)2.08 eV
• E)1.98 eV

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