# Name the S.I. unit of density. How is it related to g Cm-3? - Physics

Name the S.I. unit of density. How is it related to g Cm-3?

#### Solution

S.I. unit of density is kg M-3 In C.GS. system unit of mass is g and unit of volume is Cm3, so CGS unit of density is g Cm-3 (gram per cubic centimetre)
Relationship between S.I. and C.GS. units

1kg m^-3=(1 kg)/(1m^3=(1000g)/(100 cm)^3

=1/1000   g  cm^-3

thus,

1 kg m^-3=10^-3g_cm^-3

or  1 g cm^-3= 1000kg m^-3

Concept: Concept of Flotation and Sinking of a Substance (Relate to Density)
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#### APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 2 Physical Quantities and Measurement
Short/Long Answer Questions | Q 2 | Page 34