Optics Question 837

Question: A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is 4/3 and the fish is 12 cm below the surface, the radius of this circle (in cm) is -

Options:

A) 365

B) 45

C) 367

D) 36/7

Show Answer

Answer:

Correct Answer: D

Solution:

[d] sinic=1μ=rr2+h2

Using h=12cm,μ=4/3

We get r=367cm.



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