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.
(i) Show in the diagram the path of these rays after striking the water surface. The critical angle for water air surface is 48°.
(ii) Name the phenomenon which the rays B and D exhibit.
Refraction Plane Surfaces
ICSE 2017
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Answer
(i) The ray diagram is shown below :
(ii) The ray B exhibits refraction while the ray D exhibits total internal reflection.
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