17. The surface tension of soap solution is 0.035 N/m. The energy needed to increase the radius

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17. The surface tension of soap solution is 0.035 N/m. The energy needed to increase the radius of bubble from 4 cm to 6 cm is [2019]
(π = 22/7)
(A) 1.76 × 105 J
(C) 17.6 × 103 J
(B) 1.76 × 103 J
(D)17.6 × 105 J

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