Question

Which of the following processes will be least affected by the viscosity of water ?

• A. Water flowing through a pipe
• B. Air bubble rising up through water
• C. A wide, shallow sheet of water flowing on a flat surface
• D. Water flowing out through a hole in the side of a tank

Answer 1

The correct option is D

Water flowing out through a hole in the side of a tank

When water flows out of a hole in a tank, it is in contact with the edges of the hole over a very small area, and therefore viscosity effects are small