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Explain the following:

A straight stick partly dipped in water obliquely, appears to be bent at the surface of water.

Reflection of Light

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Answer

A straight stick partly dipped in water obliquely, appears to be bent at the surface of water due to refraction of light. The light rays coming from the tip C of the stick, at the surface of water undergoes refraction and bends away from the normal and appears to us as coming from point D (as shown in figure). Due to refraction of light from water to air the pencil ABC appears to be bent as ABD at the surface of water.

A straight stick partly dipped in water obliquely, appears to be bent at the surface of water. Light Energy, Concise Physics Solutions ICSE Class 8.

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