The work done in increasing the size of a rectangular soap film with dimensions cm to is J. The surface tension of the film in is |
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The work done in increasing the size of a rectangular soap film with dimensions cm to is J. The surface tension of the film in is |
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a) |
b) |
c) |
d) |
(b) Change in surface energy J Work done (change in area) Now, change in surface energy Work done |