Question

Show that for Refraction through a medium the ratio of real depth to apparent depth is equal to the refractive index of the medium?

Answer 1

Answer:

We know that the refractive index of water to air is 4/3 . So,

n=4/3

which should be n = 4/3 = n2/n1 , but my book says,

4/3= real depth/apparent depth.

How have they put the “depths” in the formula and Why?

anw=real depthapparent depth=4/3

apparent depth=3/4 is the real depth.

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