Fig. 4.62 shows a point source P inside a water container. Three rays A, B and C starting from the source P are shown up to the water surface.
(a) Show in the diagram the path of these rays after striking the water surface. The critical angle for water-air surface is 48∘.
(b) Name the phenomenon which the rays A, B and C exhibit.
(a)
(b) Rays A and B exhibit the phenomenon of refraction of light.
Rays C exhibit the phenomenon of total internal reflection.