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Mechanical Properties of Fluids
Question
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A capillary tube is placed vertically in water and water rises to height h above the surface of water in the capillary tube. If the tube is inclined with vertical at angle θ, then it rises to height t. Find t.

Answer

Given, a capillary tube is placed in water and water rises to a height h above the surface of water in the capillary tube. 

The vertical height to which the liquid rises in the capillary tube remains constant as shown.

 

From the figure, we have 

h/ t = cos θ 
⇒ t = h cos  [∵ cos θ < 1]

 ∴  t > h 

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