Question

Suppose a swimming pool is filled with an imaginary liquid which is optically rarer than air. For a person looking at the pool from outside, will the apparent depth of the pool be less than or greater than the real depth? Give reasons.

Answer 1

The apparent depth of the pool will be greater than its real depth. This is because the light rays from the bottom of the pool will bend away from the normal, making the apparent point seem deeper than its real depth.