engineering recuitment BHEL Engineer Trainee Mock Test 2025 Fluid Mechanics Properties of Fluids Surface Tension
If the surface tension of the soap bubble is 0.035 N/m, then the work done in blowing the soap bubble of radius 5 cm in the air is.
1
220 mJ
2
2.2 mJ
3
22 mJ
4
0.22 mJ