When It Is Struck by 240-Nm Photons,a Metal Ejects Electrons

Multiple Choice

When it is struck by 240-nm photons,a metal ejects electrons with a maximum kinetic energy of
What is the work function of this material? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 16.0 × 10^-19 J)

A) 2.60 eV
B) 2.18 eV
C) 3.02 eV
D) 3.43 eV