MPSC Rajyaseva 2021 GS Paper 1 — Question 52
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जर पाण्याची घनता 1000 kgm⁻³ आणि तांब्याची घनता 8.9 × 10³ kgm⁻³ असेल तर तांब्याची सापेक्ष घनता किती ? If density of water is 1000 kgm⁻³ and density of copper is 8.9 × 10³ kgm⁻³. What is relative density of copper ?
a)8.9✓ Correct
b)8.9 kgm⁻³
c)8.9 × 10⁶
d)8.9 × 10⁻⁶
Relative density is the ratio of the density of a substance to the density of water. Since it's a ratio of identical units, it is a dimensionless quantity, making 8.9 the correct answer.