Question

A fruit appears to be bigger in a glass of water due to ___​

Answer 1

A fruit appears to be bigger in a glass of water due to rare fraction of light.

Answer 2

since air has an index of refraction of essentially 1 and water has an index of refraction of 1.33 the angle from which the rays of light reach your eyes is larger than the angle they would in air. This makes the angular size larger to your eyes which makes the object look larger relative to how they would look in air.