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Geometrical Optics question

2005 · Shift 0 · Q120
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Geometrical Optics question

2005 · Shift 0 · Q120

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is 43{4 \over 3}34​ and the fish is 12cm12cm12cm below the surface, the radius of this circle in cmcmcm is
  1. A
    367{{36} \over {\sqrt 7 }}7​36​
  2. B
    367{36\sqrt 7 }367​
  3. C
    45{4\sqrt 5 }45​
  4. D
    365{36\sqrt 5 }365​
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