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JAMB Physics 2013 Question 8

Question 8

Density and Upthrust

A piece of cork floats in a liquid. What fraction of its volume will be immersed in the liquid? [Density of the cork = 0.25 × 103kgm−3, density of the liquid = 1.25 × 103kgm−3]

  1. A.0.8.
  2. B.0.5.
  3. C.0.2.
  4. D.0.1.
Show the answer and explanation

Answer: C (0.2.)

Explanation

For a floating body, fraction immersed = density of body ÷ density of liquid = 0.25 ÷ 1.25 = 0.2.