The pressure drop for laminar flow of a liquid in a smooth

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The pressure drop for laminar flow of a liquid in a smooth pipe at normal temperature and pressure is

1. directly proportional to density
2. inversely proportional to density
3. Independent of density
4. proportional to (density)^0.75

Correct Option: C

∆ P =	32μUL
	D²

Above equation shows that ∆P is independent of velocity.