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JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Medium

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Application +4 | -1

Two capillary of length L and 2L and of radii 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=

\frac{{\pi p{R^4}}}{{8\eta L}}

)

View answer and explanation

Correct option: A

\frac{8}{9}X

Option A (

\frac{8}{9}X

) is correct because when two capillaries are connected in series, the net rate of flow is inversely proportional to the equivalent fluid resistance, which changes by a factor of 9/8.

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