There is a horizontal film of soap solution. On it a thread is placed in the form of a loop.
Channel: Doubtnut
Date: 2021-11-02

There is a horizontal film of soap solution. On it a thread is placed in the form of a loop. The film is punctured 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 :