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

JAMB Physics 2023 55 views

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 ✓

Explanation

This physics concept involves analyzing the given values and applying relevant formulas. Work through the problem step by step using known equations and constants.

Identify what quantity needs to be found and which formula connects the given information to the answer. Substitute the values carefully, paying attention to units.

Check that your calculated answer matches one of the options provided. Understanding the underlying principle helps verify the solution makes physical sense.

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