Question

Calculate the work done in blowing out a soap bubble of diameter 1 cm. given that the surface tension of soap solution is `28 xx 10^(-3) Nm^(-1)`

Answer 1

Correct Answer - `1.76 xx 10^(-5) J`
work done, W = surface tension xx increase in surface area ` = [Sxx4 pi (D//2)^2xx2]`