The Work Function for Tungsten Is 4 $\times$ 10^-34 J · S = 4

Multiple Choice

The work function for tungsten is 4.58 eV.What is the kinetic energy of electrons emitted when light of wavelength 400 nm is incident on a tungsten surface? (Planck's constant h = 6.626 $\times$ 10^-34 J · s = 4.136 $\times$ 10^-15 eV · s.)

A) 0.74 eV
B) 1.5 eV
C) 7.7 eV
D) 2.9 eV
E) no electrons are emitted