Question

give reason (A stick partly immersed in water, appears bent )

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Answer 1

Answer:

Explanation:

(a) The apparent bending of the stick is due to the refraction of light when it passes from water into air.  

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 below.

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