Question

While in a stream 39 cm deep, they look down into the water and see a craw fish at the bottom. How deep does the stream appear to the student? (nwater = 1.33)

Answer 1

Answer:

The  depth of stream to the student is  $d_1 = 0.2932 \ m$

Explanation:

From the question we are told that

   The actual  depth of the stream is $d = 39 \ cm = 0.39 \ m$  

    The  refractive index of the water is  $n = 1.33$

Generally the apparent depth of the stream is mathematically represented as

         $d_1 = \frac{d}{1.33}$

substituting values

        $d_1 = \frac{ 0.39}{1.33}$

        $d_1 = 0.2932 \ m$