Question

23. A rectangular wire frame of size
2 cm x 2 cm, is dipped in a soap solution
and taken out. A soap film is formed,
if the size of the film is changed to
3 cm x 3 cm, calculate the work done in
the process. The surface tension of soap
film is 3 x 10-2 N/m.
[Ans. 3 x 10-5 ]]​

Answer 1

The answer to this question is 3 x 10-5