Final answer:
The number of electrons emitted by the photocathode in the photoelectric effect is directly proportional to the intensity of incident radiation, resulting in more electrons ejected at higher light intensities.
Step-by-step explanation:
The number of electrons emitted by the photocathode is directly proportional to the intensity of incident radiation. When light strikes the photocathode, the photoelectric effect results in the emission of electrons. The current generated by these electrons provides a measure of the number of electrons ejected. Experiments have shown that the photocurrent increases with a higher intensity of radiation until it reaches a maximum value, beyond which the photocurrent does not increase. Thus, an increase in light intensity results in a higher number of electrons emitted from the cathode, reflected in a higher photocurrent.