text: what will happen if the following occur? a. monochromatic light shining on the alkali metal cesium is just above the threshold frequency. b. the intensity of light increases, but the frequency remains the same. c. monochromatic light of a shorter wavelength is used. a. photoelectrons are emitted from the metal. b. no. of photons emitted increases. c. stopping potential or maximum energy of photoelectrons increases.