The cylindrical tube of a spray pump has radius R, one end of which has n fine holes, each of radius r. If the speed of the liquid in the tube is V, the speed of the ejection of the liquid through the holes is:

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V2Rnr

VR2n2r2

VR2nr2

VR2n3r2

answer is C.

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Detailed Solution

Av=constantπR2V=nπr2v1⇒v1=VR2nr2

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