Question

what is the formula for work done in blowing the soap bubble???​

Answer 1

Work done = S× 4π(R² - r²)

Answer 2

We know that a bubble has two surfaces in contact with air, so the total surface area of the bubble will be

=2×(4πR2)=8πR2Now, work done=Surface tension × Increase in surface area=T×(8πR2−0)=8πR2T