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Question
The given figure 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.
- Show in the diagram the path of these rays after striking the water. The critical angle for water-air surface is 48°.
- Name the phenomenon which the rays A, B, and C exhibit.
Solution
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Rays A, B, and C's path after they hit the water's surface is represented by the letters AA', BB', and CC', respectively.
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Refraction is the phenomenon that ray A displays. Since Ray B is at the crucial angle, it shows weak refraction. Ray C shows no refraction and complete internal reflection.
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