Wave OpticsHard
Question
A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is 
and the fish is 12 cm below the surface, the redius of this circle in cm is
and the fish is 12 cm below the surface, the redius of this circle in cm isOptions
A.
B.36√7
C.4√5
D.36√5
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