Question:
Which of the following statements is incorrect in the context of static fluid pressure?
Options:
(A) At any particular depth, it changes with direction.
(B) It exerts force normal to the walls of the container.
(C) It is independent of the shape or area of the container.
(D) It is directly proportional to the depth of the fluid.
Answer:
✅ (A) At any particular depth, it changes with direction.
Explanation:
- In a static fluid, the pressure at a point acts equally in all directions (according to Pascal’s Law).
- Thus, pressure does not change with direction at a particular depth — making statement (A) incorrect.
Meanwhile:
- (B) is correct because static fluid pressure acts normal (perpendicular) to the container walls.
- (C) is correct because static pressure depends only on depth, density, and gravity, not on the container’s shape or area (this is the hydrostatic paradox).
- (D) is correct because fluid pressure is directly proportional to depth
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