Draw a ray diagram showing the path of rays of light when they enter with oblique incidence (i) from air into water; (ii) from water into air.
Answer:
When light passes from one medium to another, it undergoes refraction, which is the bending of the light ray due to a change in speed as it moves from one medium to another with different refractive indices. The amount of bending depends on the angle of incidence and the refractive indices of the media involved.
(i) Ray diagram showing the path of rays of light when it enter with oblique incidence from air into water
(ii) from a denser medium to a rarer medium the light ray bends away from the normal.