The surface tension acts
A. perpendicular to the surface and vertically up-wards
B. perpendicular to the surface and vertically into the liquid
C. tangential to the surface
D. only at the liquid-solid interface.
Answer:C
The surface tension acts
A. perpendicular to the surface and vertically up-wards B. perpendicular to the surface and vertically into the liquid C. tangential to the surface D. only at the liquid-solid interface.