A sodium surface is illuminated with light of wavelength 0.300 μm. The work function for sodium is 2

Source: JAMB · 2023

A sodium surface is illuminated with light of wavelength 0.300 μm. The work function for sodium is 2.46 eV. Calculate the maximum kinetic energy of the ejected photoelectrons for sodium.

[c = 3 x 10⁸ ms⁻¹, 1 eV = 1.6 x 10⁻¹⁹ J, h = 6.63 x 10⁻³⁴ Js]

  1. 4.14 eV
  2. 6.6 eV
  3. 7.36 eV
  4. 1.68 eV ✓

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