Two capillary tubes whose diameters are 5mm and 4mm are made to stand vertically in water. Calculate the height to which water will rise in each capillary.
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Question From class 12 Chapter FLUID MECHANICS
Two long capillary tubes of diameter
mm and
mm are held vertically inside water one by one . How much high the water will rise in each tube ? (
, surface tension of water
N/m)
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Text Solution
Solution :
Height of water column in a capillary tube of radius r is given by <br>
….(1) <br> where T is surface tension ,
is angle of contact of water - glass which can be assumed zero . <br> where T tension is surface
is density and
is angle of contact of water - glass which can be assumed zero , <br> For the first tube , r =
mm
<br>
mm <br> According to equation (1) , for the same liquid , we have <br>
= constant If a liquid rises to a height
in a capillary tube of radius
and to height
in a capillary tube of radii
, then <br>
Explanation:
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