JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Medium

1 of 1

Application +4 | -1

16c{m^3}

Of water flows per sec through a capillary tube of radius a cm and of length

l

cm when connected to a pressure head of

h

cm of water. If a tube of the same length and radius

a/2

cm is connected to the same pressure head, the quantity of water flowing through the tube per second will be

View answer and explanation

Correct option: B

1\mathrm{c}{\mathrm{m}^3}

Option B (

1\mathrm{c}{\mathrm{m}^3}

) is correct because the volume flow rate is proportional to the fourth power of the radius, so halving the radius reduces the flow rate by a factor of 16.

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