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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 the water. At what angle does the liquid meet the tube? Surface tension of water=0.07 N and its contact angle is 0.
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Question Text | 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 the water. At what angle does the liquid meet the tube? Surface tension of water=0.07 N and its contact angle is 0. |
Answer Type | Text solution:1 |
Upvotes | 151 |