A red light was shined onto a metal sample and the result shown in (i) was observed. When...

A red light was shined onto a metal sample and the result shown in (i) was observed. When the light source was changcd to a blue light, the result shown in (ii) was observed. Explain how these results can be interpreted with respect to the photoelectric effect Describe the result you would expect for each of the fol­lowing: (a) The intensity of red light is increased, (b) The intensity of blue light is increased, (c) Violet light is used.