Final answer:
Violet light on a metal surface produces the photoelectric effect, in which electrons are ejected from the surface of the metal due to the exposure to light.
Step-by-step explanation:
The violet light on a metal surface produces the photoelectric effect in which electrons are ejected from the surface of the metal due to the exposure to light. Violet light has enough energy to exceed the threshold frequency, causing the incident radiation to be absorbed and electrons to be emitted. This phenomenon is called the photoelectric effect.