Question

2. What is the photoelectric effect?

The emission of electrons when light is shined on a metal.
O The emission of neutrons when light is shined on a metal.
O The emission of the nucleus when light is shined on a metal.
The emission of protons when light is shined on a metal.

Answer 1

The emission of electrons when light is shined on a metal.

Step-by-step explanation:

When electromagnetic radiation (light) hits something/metal/material, there is emission of electrons [called "photoelectrons", which is what "photoelectric" is from]