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Q: The mass density of an object is defined as its ______.
  • A. Mass per unit length
  • B. Mass per cubic area
  • C. Mass per unit volume
  • D. Mass per unit ampere.
Correct Answer: Option C - The mass density or density of a substance is defined as, its mass per unit volume.
C. The mass density or density of a substance is defined as, its mass per unit volume.

Explanations:

The mass density or density of a substance is defined as, its mass per unit volume.