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:
Answer:
B
Solution:
$r = \frac{h}{μ ^{2} - 1} = \frac{36}{7}$

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:

Answer:

B

Solution:

$r = \frac{h}{μ ^{2} - 1} = \frac{36}{7}$

TestHub · Accepted Answer

r = μ 2 − 1 ​ h ​ = 7 ​ 36 ​

Physics - Geometrical Optics Question with Solution | TestHub

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