Explain a stick partly immersed in water appears to be bent at the surface of water.
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due to refraction of light stick partially immersed in water appears to be bent at the surface of water.
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Answer:
The apparent bending of the stick is due to the refraction of light when it passes from water into air.
Explanation with attached diagram:
A ray of light OC coming from O passes from water into air and gets refracted away from normal (along CX). Another ray OD gets refracted along DY. The two refracted rays CX and DY, when produced backwards, appear to meet at point I. Thus, I is the virtual image of the end O of the stick. So, the stick appears to be bent as shown in the diagram. This phenomenon is due to the refraction of light as it comes out from water into air.
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