HC Verma - Concepts of Physics Part 1

Book: HC Verma - Concepts of Physics Part 1

Chapter: 18. Geometrical Optics

Subject: Physics - Class 11th

Q. No. 10 of Short Answer

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Suppose you are inside the water in a swimming pool near an edge. A friend is standing on the edge. Do you find your friend taller or shorter than his usual height?

we know that,

But, here first surface is air, so and also, surface is not at all curved. So, .

So, formula reduced to,


Here we know, of water. So, . Hence he will seem taller.

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