There is a horizontal film of soap solution On it a thread is placed in the form of a loop The film is pierced inside the loop

Question

There is a horizontal film of soap solution On it a thread is placed in the form of a loop The film is pierced inside the loop and the thread becomes a circular loop of radius R If the surface tension of the soap solution be T then the tension in the thread will be 1 nR T 2 RT 3 ART 4 2 RT

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