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An insect is embedded inside a glass block (n=1.4) so that it is located 3.8cm below...

An insect is embedded inside a glass block (n=1.4) so that it is located 3.8cm below a plane surface of the block. how far from this surface does this insect appear to a person looking at the block ?

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Answer #1

It is a problem similar to find out apparent depth.


Let the insect is at a point O. The rays OA and OB are starting from O and are refracted along AD and BC. Here AO is real depth = 3.8 cm and AI = apparent Depth = x. Using Snell's Law at point B

AS BI = AI and BO = AO because size of the pupil is very small the ray BC will enter in the eye if B is close to A.



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