Question

what is a light ? define ​

Answer 1

Answer:

Light is a transverse electromagnetic wave which has the basic unit - photons, and travels through all mediums with differing speeds .

$c = 3 \times {10}^{8} m {s}^{ - 1}$

Answer 2

Answer:

it is an eltromagnetic radiation within the portion of electromagnetic spectrum that can be perceived by the human eye