alleryA needle pierces skin but a spoon's back pressed with the same force does not. The needle wins because of its:
ASmaller area
BLarger area
CGreater mass
DLower speed
Answer & Solution
Correct answer: A. Smaller area
1. Both press with the same force.
2. The needle concentrates it on a tiny area.
3. Smaller area means greater pressure.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._
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