The CGS unit of mass density is __________. 

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SSC JE Mechanical 16 Nov 2022 Shift 2 Official Paper
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  1. gram per cubic centimetre
  2. kilogram per cubic metre
  3. gram per cubic metre
  4. kilogram per cubic centimetre

Answer (Detailed Solution Below)

Option 1 : gram per cubic centimetre
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Detailed Solution

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The correct answer is g/cm3.

Key Points

  • The SI unit of mass density is kg/m3.
  • The CGS unit of mass density is g/cm3
  • The density of the material is its mass per unit of volume.

Additional Information 

  • The most widely used symbol for density is the ρ (rho), while the Latin letter D can also be used.
  • The density is defined mathematically as the mass divided by volume.
  • ρ = m/V
  • ​The reciprocal density of a material is often referred to as its specific volume, a concept often used in thermodynamics.
  • Density is an inefficient commodity in that the volume of a material does not increase its density, instead, it increases its mass.

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