MHT CET20227 Aug 2022Evening ShiftPhysicsMechanical Properties of FluidsActual
The amount of work done in blowing a sops bubble such that its diameter increases from ' d ' to D ' is ( T = surface tension of solution )
Options
- A4 (D^2-d^2 ) T
- B8 (D^2-d^2 ) T
- C(D^2-d^2 ) T
- D2 (D^2-d^2 ) T
Correct answer
D. 2 (D^2-d^2 ) T
Step-by-step solution
Change in surface area aligned & =2 4 [ ( D 2 )^2- ( d 2 )^2 ]=2 ( D ^2- d ^2 ) & Work done = surface tension change in area & =2 ( D ^2- d ^2 ) T aligned