NEET2023PhysicsMechanical Properties of FluidsActual
The amount of energy required to form a soap bubble of radius 2   cm from a soap solution is nearly: (surface tension of soap solution = 0 . 03   N   m - 1 )
Options
- A50 . 1 × 10 - 4   J
- B30 . 16 × 10 - 4   J
- C5 . 06 × 10 - 4   J
- D3 . 01 × 10 - 4   J
Correct answer
D. 3 . 01 × 10 - 4   J
Step-by-step solution
Soap bubble has two free surface. Therefore, amount of energy required = 2 S × A = 2 0 . 03 × 4 π 2 × 10 - 2 2 = 3 . 01 × 10 - 4   J