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[" Air is blown through a pipe "AB" at a rate of "15" liters per minute.The "],[" cross - sectional area of the broad portion of the pipe is "2cm^(2)" and "],[" that of the narrow portion is "0.5cm^(2)" .The difference in water level "h],[" is (p_alr = 1.32 kg / m ^ 3 ) "],[[" (A) "16mm," (B) "1.6mm],[" (A) "10mm," (D) "1.6mm]]

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