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rahul singh

· started a discussion

· 1 Months ago

ABOUT FULL SOLUTION (Question:267101.0)

FULL FORMULA OF CAPPILRY

Question:

Under a constant pressure head, the ‘rate of flow of liquid through a capillary tube is V. If the length of the capillary is doubled and the diameter of the tube is halved, the rate of flow would become:

Options:
A)

V/4

B)

V/8

C)

V/32

D)

16V

Solution:

(c)

Knowledge Expert

· commented

· 1 Months ago

In this case, the capillary pressure on the meniscus exceeds the value calculated by the Laplace equation (1) at R1=R2=rc. therefore, the height of the capillary rise is half that in a cylindrical capillary at dc=dp.
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