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Air is blown through a pipe AB at a rate...

Air is blown through a pipe AB at a rate of `10 "Lmin"^(-1)`. The cross-sectional area of the broad portion of the pipe AB is `2 cm^(2)` and that of the narrow portion is `0.5 cm^(2)`. The difference in water level h is (density of air `=1.32 kg m^(-3))`

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