A fish inside a river will appear at a/an _________ depth to an observer looking from the ground.
lesser
greater
exact
inadequate data
A fish inside a river will appear at a _________ depth to an observer looking from the ground.
A fish is swimming in a river at a depth of 20 cm from the surface of the water. The refractive index of water is 4/3. An eagle flying above the water will see the fish at a depth of ___cm