Question Detail
Question
The work function of nickel metal is 5.0 eV. If light frequency of 3.5 × 10^15 Hz was incident on the metal to produce photoelectrons, determine the maximum kinetic energy of the photoelectrons.
Correct Answer
Option C is the correct answer.
Detailed Explanation
Photon energy E = hf = (6.626 × 10^-34)(3.5 × 10^15) = 2.319 × 10^-18 J. Convert to eV: E = 2.319e-18 / 1.602e-19 = 14.48 eV. K_max = E - φ = 14.48 - 5.0 = 9.48 eV ≈ 9.5 eV.
Hint
Use the photoelectric equation: K_max = hf - φ.