

MCQOPTIONS
Saved Bookmarks
1. |
If the surface tension of a soap air interface is 0.09 N/m, the difference between the internal and external pressure in the sap bubble of 3 cm diameter is |
A. | 22 |
B. | 20 |
C. | 24 |
D. | 30 |
E. | 36 |
Answer» D. 30 | |