2. Monochromatic UV light with a wavelength of 250 nm illuminates a photo-surface. The electrons that are emitted have a maximum kinetic energy of 0.888 eV. Answer the following: a.

Calculate the energy of the photon in eV. [1 mark] b. Calculate the work function for this photo-surface. [1 mark] c. What material might this photo-surface be made from? [1 mark]