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Ricky Ram Naidu
Asked: 2022-11-09T06:48:09+05:30 In:

Eight droplets of water each of radius 0.5 mm when coalesce into single drop , then the change in surface energy will be ,
A. `4pi T xx 10^(-5)` J
B. ` 4 pi T xx 10^(7)` J
C. ` 4pi T xx 10^(-6)` J
D. ` 4 pi T xx 10^(-8)` J

Eight droplets of water each of radius 0.5 mm when coalesce into single drop , then the change in surface energy will be ,
A. `4pi T xx 10^(-5)` J
B. ` 4 pi T xx 10^(7)` J
C. ` 4pi T xx 10^(-6)` J
D. ` 4 pi T xx 10^(-8)` J
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1 Answer

  1. Correct Answer – C
    `Delta E = E (n^(1//3)-1)= T 4piR^(2)(n^(1//3)-1)`

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