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When a film of soap solution is created inside a loop formed by rectangular wit frame & inextendable thread AB of length l & assumes a semicircular shaperemain in equilibrium .By pulling the midpoint of thread with force F the thread shape changes to 2 semicircles. Calculate surface tension of he soap solution?The figure is given in the attachment.

Swathi Soman , 4 Years ago
Grade 12th pass
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