10. The following table lists the work functions of a few common metals, measured in electron volts. Using these data, answer the following questions about the photoelectric effect. i) Calculate the kinetic energy and speed of electrons ejected at 650nm from a) Cesium b) Rubidium c) Potassium d) Sodium ii) When light with a wavelength of 190nm is incident on a metal surface, the electrons emitted from the surface are measured to have a kinetic energy of 4.0eV. Which of the metals in the table is the surface most likely to be made of? iii) Of the eight metals listed in the table, how many will eject electrons when a green laser (g=510nm) is shined on them? iv) Light with some unknown wavelength is incident on a piece of copper. The most energetic electrons emitted from the copper have 2.7eV of kinetic energy. If the copper is replaced with a piece of sodium, what will be the maximum possible kinetic energy of the electrons emitted from this new surface