Fig. 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. - Noon Academy

Fig. 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.

Class 10 | ICSE | Physics | Refraction of Light at Plane Surfaces | Selina

Fig. 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.

Solution :

(a)

(b) Rays A and B demonstrate the phenomenon of ‘light refraction.’

(c) Ray C demonstrates the occurrence of “complete internal reflection.”

i

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