A long capillary tube of radius r is put in contact with surface of a perfectly wetting liquid of density p and very low viscosity. What maximum height h the liquid can rise inside the capillary? Here height is measured above the level of the liquid outside the capillary. Surface tension of the liquid and acceleration due to gravity are denoted by o and g respectively.

Elements Of Electromagnetics
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3. A long capillary tube of radius r is put in contact with surface of a
perfectly wetting liquid of density p and very low viscosity. What
maximum height h the liquid can rise inside the capillary? Here height
is measured above the level of the liquid outside the capillary. Surface
tension of the liquid and acceleration due to gravity are denoted by o
and g respectively.
20
(a) h =
pgr
40
(b) h =
pgr
20
40
<h<
(d) Insufficient information
pgr
Pgr
Transcribed Image Text:3. A long capillary tube of radius r is put in contact with surface of a perfectly wetting liquid of density p and very low viscosity. What maximum height h the liquid can rise inside the capillary? Here height is measured above the level of the liquid outside the capillary. Surface tension of the liquid and acceleration due to gravity are denoted by o and g respectively. 20 (a) h = pgr 40 (b) h = pgr 20 40 <h< (d) Insufficient information pgr Pgr
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