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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 - Physics

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

1) Show in the diagram the path of these rays after striking the water surface.

The Critical Angle for the water-air surface is 48°.

2) Name the phenomenon which the rays B and D exhibit.

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Solution

1) Path of the rays after striking the water surface is shown below:

2) Ray 'B' and ray 'D' exhibit the phenomenon of reflection and total internal reflection (TIR), respectively.

Concept: Partial and Total Internal Reflection
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