    Question

# The density of water is 1000 kg/m3 and the density of copper is 8900 kg/m3. Which of the following statements is incorrect? (a) $\frac{\mathrm{The}\mathrm{density}\mathrm{of}\mathrm{a}\mathrm{certain}\mathrm{volume}\mathrm{of}\mathrm{copper}}{\mathrm{The}\mathrm{density}\mathrm{of}\mathrm{the}\mathrm{same}\mathrm{volume}\mathrm{of}\mathrm{water}}=8.9$ (b) $\frac{\mathrm{The}\mathrm{volume}\mathrm{of}\mathrm{a}\mathrm{certain}\mathrm{mass}\mathrm{of}\mathrm{copper}}{\mathrm{The}\mathrm{volume}\mathrm{of}\mathrm{the}\mathrm{same}\mathrm{mass}\mathrm{of}\mathrm{water}}=8.9$ (c) $\frac{\mathrm{The}\mathrm{weight}\mathrm{of}\mathrm{a}\mathrm{certain}\mathrm{volume}\mathrm{of}\mathrm{copper}}{\mathrm{The}\mathrm{weight}\mathrm{of}\mathrm{the}\mathrm{same}\mathrm{volume}\mathrm{of}\mathrm{water}}=8.9$ (d) $\frac{\mathrm{The}\mathrm{mass}\mathrm{of}\mathrm{a}\mathrm{certain}\mathrm{volume}\mathrm{of}\mathrm{copper}}{\mathrm{The}\mathrm{mass}\mathrm{of}\mathrm{the}\mathrm{same}\mathrm{volume}\mathrm{of}\mathrm{water}}=8.9$

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Solution

## Ans: b. $\mathrm{Density}=\frac{\mathrm{The}\mathrm{volume}\mathrm{of}\mathrm{a}\mathrm{certain}\mathrm{mass}\mathrm{of}\mathrm{copper}}{\mathrm{The}\mathrm{volume}\mathrm{of}\mathrm{the}\mathrm{same}\mathrm{mass}\mathrm{of}\mathrm{water}}=8.9$ This is because the density is defined as the ratio of the mass of the object to the volume of the object.  Suggest Corrections  1      Related Videos   Relative Density
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