Question

what is light ?define with its unit​

Answer 1

Answer:

a unit of illuminance on a surface that is everywhere 1 foot from a point source of 1 candle. L, lambert. a cgs unit of illumination equal to the brightness of a perfectly diffusing surface that emits or reflects one lumen per square centimeter.

Explanation:

please mark as brainleist

Answer 2

Answer:

light is a source of energy

Explanation:

it helps us to see the things behind us