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Question
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 up to the water surface.
- Show in the diagram the path of these rays after striking the water surface. The Critical Angle for the water-air surface is 48°.
- Name the phenomenon which the rays B and D exhibit.
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Solution
1)
2) Ray B shows the phenomenon of ‘refraction of light’ and ray D shows the phenomenon of ‘total internal reflection’.
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