Question

The magnetic field at a point associated with a light wave is $B=2\times {10}^{-6}$ Tesla $sin\left[\right(3.0\times {10}^{15}{s}^{-1}\left)t\right]$ $sin\left[\right(6.0\times {10}^{15}{s}^{-1}\left)t\right]$. If this light falls on a metal surface having a work function of $2.0eV$, what will be the maximum kinetic energy of the photoelectrons ?

Answer 1