17. Excess pressure of one soap bubble is four times more than the other. Then the ratio of volume of first bubble to another one is
(a) 1 : 64
(b) 1 : 4
(c) 64 : 1
(d) 1 : 2
Ans. a
(9)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (126)