32. 8000 identical water drops are combined to form a big drop. Then the ratio of the final surface energy to the initial surface energy of all the drops together is
(a) 1 : 10 (b) 1 : 15
(c) 1 : 20 (d) 1 : 25
Ans. c
(7)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)