Question
Which type of phenomenon (reflection or refraction) occurs when light falls on (i) a highly polished surface like a mirror and (ii) a transparent medium like glass or water?
Solution
(i) When light falls on a highly polished surface like mirror, reflection occurs.
(ii) Refraction of light occurs when light falls on a transparent medium like glass or water. When there is diffrence in the density of the medium, a ray tends to bend towards or away from the normal at the interface of media.
