Mechanical Properties of Fluids

Question: If work done in increasing the size of a soap film from $10\ cm\times 6\ cm$ to $10\ cm\times 11\ cm$ is $2\times {{10}^{-4}}J,$ then the surface tension is

1) $2\times {{10}^{-2}}N{{m}^{-1}}$

2) $2\times {{10}^{-4}}N{{m}^{-1}}$

3) $2\times {{10}^{-6}}N{{m}^{-1}}$

4) $2\times {{10}^{-8}}N{{m}^{-1}}$

Solution:

Explanation: No Explanation

Surface tension surface energy

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