Question

what is the relationship among refraction index ,real depth and apparent depth

Answer 1

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?

ans=real depth apparent depth=43

apparent depth=34 real depth