A. On polished surfaces
B. On rough surfaces
C. In the absence of agitation
D. None of these
Correct Answer: On rough surfaces ✔
Last Updated: March 03, 2019
A. On polished surfaces
B. On rough surfaces
C. In the absence of agitation
D. None of these
Correct Answer: On rough surfaces ✔
Last Updated: March 03, 2019