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JAMB Physics 2006 Question 41

Question 41

Density and Upthrust

If the relative density of gold is 19.2, the volume of 2.4 kg of gold is [Density of water = 103 kgm−3]

  1. A.1.92 × 10−4 m3
  2. B.4.61 × 10−3 m3.
  3. C.8.00 × 10−3 m3 .
  4. D.1.25 × 10−4 m3.
Show the answer and explanation

Answer: D (1.25 × 10−4 m3.)

Explanation

Density of gold = 19.2 × 1000 = 19 200 kg m−3. Volume = mass ÷ density = 2.4 ÷ 19 200 = 1.25 × 10−4 m3.