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NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Medium

1 of 1

Application +4 | -1

Two capillaries of radii

{r_1}

and

{r_2}

, length

{l_1}

and

{l_2}

respectively are in series. A liquid of viscosity

\eta

is flowing through the combination under a pressure difference

p

. What is the rate of volume flow of liquid?

View answer and explanation

Correct option: D

\frac{{\pi \mathrm{ }p}}{{8\eta }}{\left( {\frac{{{l_1}}}{{r_1^4}} + \frac{{{l_2}}}{{r_2^4}}} \right)^{ - 1}}

Option D (

\frac{{\pi \mathrm{ }p}}{{8\eta }}{\left( {\frac{{{l_1}}}{{r_1^4}} + \frac{{{l_2}}}{{r_2^4}}} \right)^{ - 1}}

) is correct because it represents the combined resistance to flow in series.

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