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MHT CET 2026 (14 May, Shift 2) · Surface Energy & Work Done

Surface Energy & Work Done question from MHT CET 2026 (14 May, Shift 2)

Q8MHT CET 2026 · 14 MAY · SHIFT 2Medium

Surface Energy & Work Done

A frame made up of metallic wire enclosing a surface area A is covered with a soap film. If the area of the frame of metallic wire is reduced by 25% the energy of the soap film will be changed by

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Answer: (d)

Surface energy of the film $E = T \times 2A \propto A$ .
Area reduced by 25% means energy is reduced by 25%.
So the answer is (d) $25\%$ .

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