Ans. Reflection is the process of bouncing back of light rays when they strike a surface, without changing their medium. The angle of incidence is equal to the angle of reflection. Refraction, on the other hand, is the bending of light rays as they pass from one medium to another, due to the change in speed. The angle of incidence is not equal to the angle of refraction, except when the light ray is incident normally on the boundary between the two media.