A girl is sitting on the edge of a pier with her legs dangling over the water. Her soles are 80.0 cm above the surface of the water. A boy in the water looks up at her feet and wants to touch them with a reed. (n_water = 1.333.) He will see her soles as being

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Quizplus · Accepted Answer

Due to refraction, objects appear higher than they actually are when viewed from a denser medium like water. The apparent height can be calculated using the formula: apparent height = actual height / refractive index. So, 80 cm / 1.333 ≈ 60 cm. Adding this to the actual height gives approximately 107 cm.

A Girl Is Sitting on the Edge of a Pier