When light of wavelength 350 nm is incident on a metal surface,the stopping potential of the photoelectrons is 0.500 V.What is the maximum kinetic energy of these electrons? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-1⁹ J)

Question

Quizplus · Accepted Answer

The maximum kinetic energy of the photoelectrons is equal to the stopping potential times the charge of an electron (1 eV = 1.60 × 10^-19 J), which directly gives 0.500 eV without needing further calculation.

When Light of Wavelength 350 Nm Is Incident on a Metal