Question

what is refraction of light?

Answer 1

When light moves from one medium to another, due to the change in its speed the direction of the light changes or the light bends. this bending of the light is called the refraction of light

Answer 2

light usually travels in a straight line, as it passes from a transparent substance like water it slightly bends this is called refraction of light. this bending by refraction helps us to have lense rainbows,prism etc