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A dimensionally consistent relation for the volume `V` of a liquid of coefficiet of viscosity `eta` flowing per second through a tube of radius `r` and length `l` and having a pressure difference `p` across its end, is

A

`V=(piPr^(4))/(8etal)`

B

`V=(pieta)/(8Pr^(4))`

C

`V=(8Peta)/(pir^(4))`

D

`V=(piPeta)/(8r^(4))`

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A
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