The work function of a metal is

Which of the following is dependent on the intensity of incident radiation in a photoelectric experiment?

$A$ photoelectric cell is illuminated by a point source of light $1 \ m$ away. When the source is shifted to $2 \ m$,then:

Which of the following phenomena is not explained by the wave nature of light?
$(A)$ Reflection
$(B)$ Diffraction
$(C)$ Photoelectric effect
$(D)$ Interference
$(E)$ Polarization
Choose the most appropriate answer from the options given below:

The electrons are emitted in the photoelectric effect from a metal surface:

In the photoelectric effect, keeping the frequency of incident radiation and the accelerating potential fixed, if the intensity of incident light is increased,