WAEC Physics 2017 Objective — Question 3
Question 3 of 50 from the West African Examinations Council (WAEC) Physics 2017 Objective paper, with the correct answer and a full explanation.
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What is the density of a fuel of relative density 0.72? [Density of water = 1000 kgm⁻³]
- A. A. 72 kgm⁻³
- B. B. 720 kgm⁻³Correct
- C. C. 7200 kgm⁻³
- D. D. 72000 kgm⁻³
Explanation
Relative density (R.D) of fuel = 0.72, density of water = 1000 kgm⁻³. R.D = (density of fuel)/(density of water) = 0.72x1000 = 720 kgm⁻³.
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