The photoelectric work function for a metal surface is 4.125eV. The cut -off wavelength for this surface is

The photoelectric work function for a metal surface is 4.125eV. The cu

1.	The photoelectric work function for a metal surface is 4.125eV. The cut -off wavelength for this surface is
Answer» energy of incident photons is 4EV energy of incident photons is 1eV photoelectric current increases when we use photons of high frequency energy of incident photons is 3eV SOLUTION :E= W+ KE `impliesKE = E -W = 4eV`