(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A fish is 80 cm below the surface of a pond. What is the apparent depth (in cm) when viewed from a position almost directly above the fish? (For water, n = 1.33.)

2. Relevant equations

Snell's law: [tex]n_1 sin \theta_1 = n_2 sin \theta_2[/tex]

3. The attempt at a solution

So far I have found the angle of refraction in the water using Snell's law. Since they are asking for "a position almost directly above the fish", I took [tex]\theta_1 = 90[/tex].

[tex]1= 1.33 sin \theta_2[/tex]

[tex]\theta_2 = 48.75[/tex]

But I what else can I do?? I'm really stuck! I need to find the difference between he apparent and the real depth x, 80-x=apparent length. But how? Here's a diagram which shows a similar situation:

The correct answer is 60 cm.

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# Homework Help: Apparent depth and snells law

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