Light of Wavelength 400 Nm Falls on a Metal Surface

question 34

Multiple Choice

Light of wavelength 400 nm falls on a metal surface having a work function 1.70 eV. What is the maximum kinetic energy of the photoelectrons emitted from the metal? (c = 3.00 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s = 4.141 × 10^-15 ev ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 4.52 eV
• B) 3.11 eV
• C) 1.41 eV
• D) 2.82 eV
• E) 1.70 eV

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