When a Metal Is Illuminated by Light,photoelectrons Are Observed Provided

question 24

Multiple Choice

When a metal is illuminated by light,photoelectrons are observed provided that the wavelength of the light is less than 520 nm.What is the metal's work function? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19 J)

• A)2.4 eV
• B)2.6 eV
• C)2.8 eV
• D)3.0 eV

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