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Determine the surface energy of a soap-w...

Determine the surface energy of a soap-water film formed on a frame of area `10^-3m^2`. Surface tension of soap-water `=70xx10^-3N.m^-1`.

Text Solution

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Surface energy,
`=2xx"surface tension"xx"area"`
`=2xx70xx10^-3xx10^-3=14xx10^-5` J.
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