Question

Give Reason
If a fish in an aquarium is observed from the bottom, it appears in air.

Answer 1

This is due to the refraction of light rays on the fish

Answer 2

I think when you observe the fish in the aquarium from it's bottom.... it will not be clear to see because the glass of it's bottom be wider then it's all sides. It will be blur a little bit. because there will be water in the aquarium.