If a fish looks upward at 45 degrees with respect to the water's surface, it will see
A) only the water's surface.
B) another fish in the pond.
C) the bottom of the pond.
D) the sky and possibly some hills.
E) none of these

Question

Quizplus · Accepted Answer

When a fish looks upward at a 45-degree angle with respect to the water's surface, it will see through the water-air interface due to refraction. Light from the sky and possibly surrounding objects like hills can enter the water within a certain critical angle, allowing the fish to see them.

If a Fish Looks Upward at 45 Degrees with Respect