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17. The surface tension of a soap solution

is 2 x 10-2 N/m. To blow a bubble of radius 1 cm, the work done is 

(a)    4 π x 10-6 J

(b)   8  π x 10-6 J

(c)   12  π x 10-6 J

d)    16 π x 10-6 J

Ans. d

(16)

5/5 - (2 votes)

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