A liquid drop of diameter 2 mm and surface tension 70 dy cm^(-1) is sprayed into 1000 identical small droplets. Calculate the work done in the process.

A liquid drop of diameter 2 mm and surface tension 70 dy cm^(-1) is sp

1.	A liquid drop of diameter 2 mm and surface tension 70 dy cm^(-1) is sprayed into 1000 identical small droplets. Calculate the work done in the process.
Answer» <html><body><p></p>Solution :Number of drops n = 1000, diameter of drop d = 2mm, radius of drop r = 1mm = `10^(-1)<a href="https://interviewquestions.tuteehub.com/tag/cm-919986" style="font-weight:bold;" target="_blank" title="Click to know more about CM">CM</a>` <br/> <a href="https://interviewquestions.tuteehub.com/tag/surface-1235573" style="font-weight:bold;" target="_blank" title="Click to know more about SURFACE">SURFACE</a> tension T = <a href="https://interviewquestions.tuteehub.com/tag/70-333629" style="font-weight:bold;" target="_blank" title="Click to know more about 70">70</a> dyne `cm^(-1)`, <a href="https://interviewquestions.tuteehub.com/tag/work-20377" style="font-weight:bold;" target="_blank" title="Click to know more about WORK">WORK</a> done to spray the large drop into <a href="https://interviewquestions.tuteehub.com/tag/small-1212368" style="font-weight:bold;" target="_blank" title="Click to know more about SMALL">SMALL</a> drops W = `4pir^(2)T(n^(1//3)-1)` <br/> `rArrW=4xx22/7xx(10^(-1))^(2)xx70[(1000)^(1//3)-1]` <br/> `rArrW=4xx22xx10^(-2)xx10xx9rArrW=79.2"ergs".=7.9xx10^(-6)J`.</body></html>