In the photoelectric effect, suppose that the intensity of the light is increased, while the frequency of the light is kept constant. The frequency is greater than the minimum frequency fo. State whether each of the following will increase, decrease, or remain the same. (a) The current in the phototube (b) The number of electrons emitted per second from the metal surface (c) The maximum kinetic energy that an electron could have (d) The maximum momentum that an electron could have