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Apparent Depth

The depth of ...

Question

The depth of a pond is 10 m. What is the apparent depth for a person looking normally to the water surface? $μ_{w a t e r} = 4 / 3.$

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Solution

Apparent depth of the water as seen from the outside the water is
$\Rightarrow d_{a} = \frac{10}{μ_{w a t e r}} = \frac{10}{\frac{4}{3}} = 7.5 m$

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