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JEE Physics · Medium

Fluid Mechanics: Buoyancy MCQ

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BuoyancyMediumQuestion 30905

Question

A body floats when:
  1. A
    Its density > fluid density
  2. B
    Buoyant force < weight
  3. C
    Buoyant force = weight
    Correct
  4. D
    It is partially submerged only

Correct answer

Buoyant force = weight

Explanation

Floating equilibrium: F_b = W. For a floating body, ρ_body/ρ_fluid = fraction submerged.

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