For laminar flow through along pipe, the pressure drop per unit length

1.	For laminar flow through along pipe, the pressure drop per unit length increases
A.	in linear proportion to the cross-sectional area
B.	in proportion to the diameter of the pipe
C.	in inverse proportion to the cross-sectional area
D.	in inverse proportional to the square of cross-sectional area
Answer» D. in inverse proportional to the square of cross-sectional area

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For laminar flow through along pipe, the pressure drop per unit length increases

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