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

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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 a tank.

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detailed solution

Correct option is D

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.


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