(a)[3]
State three other photoelectric-emission observations that support a particulate nature of electromagnetic radiation.
(b(i))[2]
Explain why an emitted electron can have kinetic energy below the maximum for a given frequency.
(b(ii).1)[1]
Use Fig. 9.1 to find the threshold frequency.
(b(ii).2)[3]
Use Fig. 9.1 to determine the work function energy, in eV, for the metal surface.
(ii(1))[1]
Determine threshold frequency.
(ii(2))[3]
Determine the work function energy, in eV, for this metal surface.