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 12cm below the surface, the radius of this circle (in cm) is:

A

$365 $

B

$45 $

C

$367 $

D

$7 36 $

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Updated on : 2022-09-05

Solution

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Correct option is D)

$sini_{c}=μ1 =r_{2}+h_{2} r $ Using $h=12$ cm, $μ=4/3$ We get $r=7 36 $ cm.