11. The surface tension of a liquid is 5 N/m. If a thin film of the area 0.02 m2 is formed on a loop
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Jun 7, 2022
(a) 5 x 102 j (b) 2.5 x 10-2 j (c) 2 x 10-1 (d) 5 x 10-1 j...
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