Question

The packets of light energy are called ___________

• A. Electrons
• B. Neutrons
• C. Photons
• D. Positrons

Answer 1

The correct option is C

Photons

Photons:

1. A photon is the smallest discrete amount of electromagnetic radiation or quantum.
2. It is the fundamental unit of all light.
3. Photons are always in motion and, in a vacuum, travel at a constant speed of $3\times {10}^8\frac{\text{m}}{\text{s}}$to all observers.
4. This is commonly known as the speed of light, which is denoted by the letter$C$.

Hence, Option(C) is correct.