Question

why is light called a form of energy

Answer 1

Electromagnetic energy is the same as radiation or light. This type of energy can take the form of visible light, like the light from a candle or a light bulb, or invisible waves, like radio waves, microwaves, x-rays and gamma rays.

Answer 2

Light is a range of electro magnetic induction and electro magnetic induction transmit energy in space from one point to the another point at constant speed.