question_answer

The work done in blowing a soap bubble of radius r of the solution of surface tension T will be [DPMT 1999; MP PMT 2003]

A)             \[8\pi {{r}^{2}}T\]

B)                      \[2\pi {{r}^{2}}T\]

C)             \[4\pi {{r}^{2}}T\]  

D)             \[\frac{4}{3}\pi {{r}^{2}}T\]