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A fish in water (refractive index n ) looks at a bird vertically above in the air. If y is the height of the bird and x is the depth of the fish from the surface, then the distance of the bird as estimated by the fish is

A

x + y `(1 + (1)/(n))`

B

y + x `(1 - (1)/(n))`

C

x + y `(1 -(1)/(y))`

D

x+ ny

Text Solution

Verified by Experts

The correct Answer is:
D
When we seen object from denser to rarer medium
`d_("app") = d_("actual") xx n = yn`
Hence, distance = x + ny.
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