A glass capillary tube of internal radius r=0.25 mm is immersed in water. The top end of the tube projects by 2 cm above the surface of water. At what angle does the liquid meet the ends of the tube?[surface tension of water = 0.07 N m−1]

A glass capillary tube of internal radius r=0.25 mm is immersed in wat

1.	A glass capillary tube of internal radius r=0.25 mm is immersed in water. The top end of the tube projects by 2 cm above the surface of water. At what angle does the liquid meet the ends of the tube?[surface tension of water = 0.07 N m−1]
Answer» A glass capillary tube of internal radius $r = 0.25 mm$ is immersed in water. The top end of the tube projects by $2 cm$ above the surface of water. At what angle does the liquid meet the ends of the tube? [surface tension of water = $0.07 N m^{- 1}$ ]

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A glass capillary tube of internal radius r=0.25 mm is immersed in water. The top end of the tube projects by 2 cm above the surface of water. At what angle does the liquid meet the ends of the tube?[surface tension of water = 0.07 N m−1]

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