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When a long glass capillary tube of radius 0.015 cm is dipped in a liquid, the liquid rises to a height of 15 cm within it. If the contact angle between the liquid and glass to close to 0∘, the surface tension of the liquid (in mN m−1) is ______. (Give answer in the closest integer)[ρ(liquid)=900 kg m−3, g=10 ms−2] |
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Answer» When a long glass capillary tube of radius 0.015 cm is dipped in a liquid, the liquid rises to a height of 15 cm within it. If the contact angle between the liquid and glass to close to 0∘, the surface tension of the liquid (in mN m−1) is ______. [ρ(liquid)=900 kg m−3, g=10 ms−2] |
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