Density is defined as:
AMass times volume
BVolume per unit mass
CForce per unit area
DMass per unit volume
Answer & Solution
Correct answer: D. Mass per unit volume
1. Density tells how compact a material is.
2. The defining formula is rho = mass / volume.
3. SI unit is kg per cubic metre.
4. Water has a density of about 1000 kg per cubic metre.
_Source: Selina Concise Physics ICSE Class 8, Ch 1 'Matter'_
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