Question: By dipping a U-shaped wire in a soap solution, a film is formed between it and a light sliding wire resting on it. The

By dipping a U-shaped wire in a soap solution, a film is

By dipping a U-shaped wire in a soap solution, a film is formed between it and a light sliding wire resting on it. The sliding wire supports a weight of 0.01 N when its length is 20 cm. Find the surface tension of the liquid.

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