alleryA body immersed in a fluid experiences an upward buoyant force equal to the weight of fluid displaced. This is:
APascal's principle
BArchimedes' principle
CBernoulli's principle
DStokes' law
Answer & Solution
Correct answer: B. Archimedes' principle
1. Archimedes' principle: the upthrust (buoyancy) on a body partly or wholly immersed in a fluid equals the weight of the fluid the body displaces.
2. Pascal's principle is about pressure transmission; Bernoulli's about flow energy; Stokes' law gives viscous drag on a sphere.
_Source: syllabus Physics Ch 9 §9.3 Buoyancy + Archimedes_
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