In case of photoelectric effect experiment explain the following facts giving reasons:
The photoelectric current increases with increase of intensity of incident light.

In case of photoelectric effect experiment explain the following facts giving reasons: The wave theory of light could not explain the existence of the threshold frequency.

Photoelectric current can be increased by using:

Explain the following statement giving reason- Bell metal is not a metal.

In an experiment on photoelectric effect, the following graphs were obtained between the photoelectric current 'I' and anode potential V. Name the characterstics of this incident radiation that was kept constant in this experiment.

In photoelectric effect, does the photoelectric current depend on the intensity of incident radiation? Give reasons.

Define the term threshold frequency and stopping potential in relation to phenomenon of photoelectric effect. How is the photoelectric current affected on increasing the intensity of incident radiation and why?

Draw a plot showing the variation of photoelectric current versus the intensity of incident radiation on a given photosensitive surface.