Properties Of Solids And Liquids Question 239

Question: Two capillary of length L and 2L and of radius R and 2R are connected in series. The net rate of flow of fluid through them will be (given rate of the flow through single capillary, X=πPR4/8ηL) [DCE 2005]

Options:

A)3 m/s

B)6 m/s

C)12 m/s

D)8 m/s

Show Answer

Answer:

Correct Answer: C

Solution:

a1v1=a2v2

therefore v2v1=a1a2=(r1r2)2

therefore v2=3×(2)2 = 12 m/s



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