The diagram below shows a point source P inside a water container

Light (10)

The diagram below shows a point source P inside a water container. Four rays A, B, C, D starting from the source P are shown upto the water surface.

1. Show in the diagram the path of these rays after striking the water surface. The Critical Angle for water air surface is 48°.
2. Name the phenomenon which the rays B and D exhibit.

Answer

i.

 

ii. 

Ray B undergoes refraction of light

Ray D undergoes total internal reflection of light.

• Exam Year: 2017