Question

*(5) A soap film is formed when a rectangular wire
frame of area 2 cm x 2 cm is dipped in a soap
solution and taken out. If the area of the film is
increased to 3 cm x 3 cm, calculate the work done
in the process. [Surface tension of the soap film is
3 x 10-2 N/m]
(2 marks)​

Answer 1

Answer:

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Explanation: