Generally to estimate PMP, $P_{n} = 42.16 D^{0.475}$ is used (where $P_{n}$ = maximum depth of precipitation, D = duration). What are the units of $P_{n}$ and D respectively in the equation?

mm, sec

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cm, sec

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mm, hr

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cm, hr

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Solution

The correct option is D cm, hr
D(duration) is in hours and $P_{n}$ (maximum depth of precipitation) is obtained in cm.

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