Question

Explain two characteristics of the photoelectric effect on the basis of Einstein’s photoelectric equation.

Answer 1

1. The emission of photoelectrons occurs instantly. The emission of photoelectrons is instantaneous.
2. Effect of light intensity on photovoltaic current: Plate C is given an appropriate positive potential. The frequency of incident light is kept constant, but it must be greater than the threshold frequency (v > v₀). It has been noticed that as light intensity increases, so does the photoelectric current. This means that the current is directly proportional to the intensity of the incident light.