Question

define reflection and refraction?​

Answer 1

Reflection involves a change in direction of waves when they bounce off a barrier. Refraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or the bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves.

Answer 2

1.refraction means light travels obliquely from one transpernt medium into another medium the bending of light is called refraction
2.reflection means a light falls on higly polished surfaces like a mirror most of the light is sent back in to the same medium this is called reflection