A fisherman in a stream 39 cm deep looks downward into the water and sees a rock on the stream bed.How deep does the stream appear to the fisherman? The index of refraction of the water is 1.33.
A) 29 cm
B) 52 cm
C) 33 cm
D) 45 cm

Question

Quizplus · Accepted Answer

The apparent depth of the stream is calculated using the formula: $d' = \frac{d}{n}$, where $d'$ is the apparent depth, $d$ is the real depth (39 cm), and $n$ is the index of refraction of water (1.33). Plugging in the values, we get $d' = \frac{39}{1.33} \approx 29$ cm.

A Fisherman in a Stream 39 Cm Deep Looks Downward