Answer the following giving reason:
(a) All the photoelectrons do not eject
with the same kinetic energy when monochromatic light is incident on a metal
surface.
(b) The saturation current in case (a) is different for different intensity.
(c) If one goes on increasing the wavelength of light incident on a metal sur
face, keeping its intensity constant, emission of photoelectrons stops at a certain
wavelength for this metal.