In an experiment, light of a particular wavelength is incident on a metal surface, and electrons are emitted from the surface as a result. To produce electrons with higher kinetic energy per electron, the experimenter should do which of the following? 1. Increase the intensity and the wavelength of the light 2. Decrease the wavelength of the light 3. Decrease the intensity and increase the wavelength of the light 4. None of these would produce the desired result. 5. Increase the wavelength of the light