JEE Physics · Medium

Fluid Mechanics: Buoyancy MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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BuoyancyMediumQuestion 30906

Question

A wooden block (density 600 kg/m³) floats in water (density 1000 kg/m³). Fraction above water surface is:
  1. A
    0.4
    Correct
  2. B
    0.6
  3. C
    0.2
  4. D
    0.8

Correct answer

0.4

Explanation

Fraction submerged = ρ_block/ρ_water = 0.6. Fraction above = 1 − 0.6 = 0.4.