The depth of a pond is 10 m. What is the apparent depth for a person looking normally to the water surface?
The depth of a pond is 10 m. What is the apparent depth for a person looking normally to the water surface?
nwater = 4/3.
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Given: Real depth of pond, dreal = 10 m,
nw = \(\frac{4}{3}\)
To find: Apparent depth
Formula: n = \(\frac{Real\,depth}{Apparent\,depth}\)
Calculation: From formula,
∴ Apparent depth = \(\frac{Real\,depth}{n}\) = \(\frac{10}{(\frac{4}{3})}\)
= \(\frac{10\times3}{4}\) = 7.5 m
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