Question

what are quanta of light called?
muons
excitons
charms
photons

Explanation:

• Muons are elementary particles similar to electrons but with more mass.
• Excitons are bound states of an electron and an electron hole in a dielectric crystal.
• Charms are a type of quark in particle physics.
• Photons are the fundamental particles of light, representing the quanta of electromagnetic radiation.

Answer:

photons