When a photoelectric surface is illuminated with light of wavelength 437 nm, the stopping potential is measured to be 1.67 V. (1 eV = 1.60 × 10^-19 J, e = 1.60 × 10^-19 C, m_electron = 9.11 × 10^-31 kg, h = 6.626 × 10^-34 J ∙ s)
(a) What is the work function of the metal, in eV?
(b) What is the maximum speed of the ejected electrons?

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The Answer of When a photoelectric surface is illuminated with light of wavelength 437 nm, the stopping potential is measured to be 1.67 V. (1 eV = 1.60 × 10^-19 J, e = 1.60 × 10^-19 C, m_electron = 9.11 × 10^-31 kg, h = 6.626 × 10^-34 J ∙ s) (a) What is the work function of the metal, in eV? (b) What is the maximum speed of the ejected electrons?

When a Photoelectric Surface Is Illuminated with Light of Wavelength