Question

what is light.
plz tell fast​

Answer 1

Answer:

radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light..

Answer 2

DEFINITION OF LIGHT

light is an invisible energy which causes in us the sensation of vision.

SPEED OF LIGHT

light travels at a very fast speed

$3 \times {10}^{8} m \: s$

it means the speed of light is 300,000,000 m/s

sources of light

now you can ask, what give a us light? it is a luminous object that can emit light of their own ,such as Sun, lightning, electric bulb (when it is switched on ) etc.

sun is primary source of light for the planet earth. It is huge ball of burning gases which give us tremendous amounts of heat and light energy .