Question

There is a horizontal fdm of soap solutions, on it a thread is placed in form of a loop. The film is pierced inside the loop and the thread becomes a circular loop of radius R. If the surface thension of soap solution is T. Then tension in the thread will be

• A. $\pi R^2T$
• B. 2RT
• C. RT
• D. $\frac{\pi R^2}{T}$

Answer 1

Answer: (C)

RT

Answer 2

$2F = TX 2R$