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What is the potential energy of a soap ...

What is the potential energy of a soap film formed on a frame of area ` 5 xx 10^(-3) m^(2)` ? The surface tension of soap solution is `30 xx 10^(-3)` N/m

A

`2xx10^(-4)`J

B

`2.5 xx10^(-4)`J

C

`3xx10^(-4)`J

D

`5xx10^(-4)`J

Text Solution

Verified by Experts

The correct Answer is:
C
P.E = Work done = 2 TA
` = 2 xx 30 xx 10^(-3) xx 5 xx 10^(-3) = 3 xx 10^(-4)`J
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