A fish is near the centre of a spherical...

A fish is near the centre of a spherical water filled(`mu=4//3`)fish bowl, a child stands in air at a distance `2R` (`R` is the radius of curvature of the sphere)from the centre of the bowl. At what distance from the centre would the child nose appear to the fish situated at the centrer:

A

R

B

2R

C

3R

D

4R

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The correct Answer is:

C

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