Given that the surface tension of water is 75 dyne/cm , its density 1 g/cc and angle of contact zero, the height to which water rises in a capillary tube of 1
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![The work done against surface tension in formation of a drop of mercury of radius 4cm is ( the surfaceentension for mercury 465 dyne/cm) The work done against surface tension in formation of a drop of mercury of radius 4cm is ( the surfaceentension for mercury 465 dyne/cm)](https://dwes9vv9u0550.cloudfront.net/images/3552835/0e01a71b-723a-4d19-a2ff-aadad2581b7e.jpg)
The work done against surface tension in formation of a drop of mercury of radius 4cm is ( the surfaceentension for mercury 465 dyne/cm)
![The surface tension of water at 0^@C is 72 dyne/cm, surface tension of water at 30^@C is (alpha for water = 0.0025//^@C) The surface tension of water at 0^@C is 72 dyne/cm, surface tension of water at 30^@C is (alpha for water = 0.0025//^@C)](https://d10lpgp6xz60nq.cloudfront.net/web-thumb/643021178_web.png)
The surface tension of water at 0^@C is 72 dyne/cm, surface tension of water at 30^@C is (alpha for water = 0.0025//^@C)
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![The surface tension of water at 20^∘C is 73 dynes cm^-1 . The minimum value of work done needed to increase surface area of water from 2 cm^2 to 5 cm^2 is The surface tension of water at 20^∘C is 73 dynes cm^-1 . The minimum value of work done needed to increase surface area of water from 2 cm^2 to 5 cm^2 is](https://haygot.s3.amazonaws.com/questions/1966147_785290_ans_cf54f434f33d4f35b947f73525a0e807.jpg)