Pascal's principle describes what happens when the pressure on an enclosed fluid is changed. What does it state?
AThe change fades with distance from its origin
BThe change is transmitted undiminished throughout
CThe change acts only on the container walls
DThe change is shared out among the walls
Answer & Solution
Correct answer: B. The change is transmitted undiminished throughout
1. Atoms in a fluid are free to move, so they pass on any applied pressure.
2. Pascal's principle states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.
3. Undiminished means the full change reaches every point, so it does not fade with distance.
4. It reaches the fluid as well as the walls, and it is not divided up between them.
_Source: OpenStax College Physics (CC BY 4.0), Ch 11 "Fluid Statics", section 11.5 Pascal's Principle_
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