# The surface tension of soap solution is $0.03 N/m$. The work done in blowing to form a soap bubble of surface area $40\;cm^2$, in Joules, is

$\begin {array} {1 1} (1)\;1.2 \times 10^{-4} & \quad (2)\;2.4 \times 10^{-4} \\ (3)\;12 \times 10^{-4} & \quad (4)\;24 \times 10^{-4} \end {array}$

## 1 Answer

$(2)\;2.4 \times 10^{-4}$
answered Nov 7, 2013 by

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