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What is laminar flow of liquid?...

What is laminar flow of liquid?

A

Regular gradation of velocity for layers in passing from one layer to the next layer of a liquid

B

Showing constancy in the velocity of layers of a liquid

C

Increase in the velocity of layers from surface to bottom of a liquid

D

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The correct Answer is:
A
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Laminar flow of a liquid means

To study the laminar flow of a liquid through a narrow tube, the following formula is used V=(pi P r^(4))/(8 eta l) . Given P = 76 cm of Hg , r = 0.28 cm , V = 1.2 cm^(2)s^(-1) , l = 18.2 cm If these quantities are measured to the accuracy of 0.5 cm of Hg, 0.01 cm, 0.1 cm^(3) s^(-1) and 0.1 cm respectively, find maximum percentatge error in the value of eta .