Question

Choose the answer that explains the photoelectric effect.

Answer 1

Metallic plates emit electrons only when light of a certain minimum frequency shines on them.

Step-by-step explanation:

Answer 2

Photoelectric effects occurs in metals. When light or electromagnetic radiation shines upon these metals, electrons jump or are emitted freely. These emitted electrons are therefore called photoelectrons. This phenomenon can be measured in electric currents. Photoelectric effect also denotes the wave-like property of light.