Question
joule work is being done in breaking a big drop of water of radius R into 1000 small drops of equal size. Find out the surface tension of water.




None of these
easy
Solution
According to the solution above example, surface energy of the big drop of water of radius , where T is surface tension of water similarly
Surface energy of 1000 small drops formed by that drop
.
increase in surface energy,
This is the work done in breaking the big drop, which is equal to joule. This must be written as .
.
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