Question

D. The R.D. of aluminium is 2.7. What is its density in C.G.S. and Si units?​

Answer 1

Answer:

Relative density of a material A with respect to another material B is given by ρ

r

=

ρ

B

ρA

Relative density of aluminium with respect to water=2.7=

ρ

water

ρ

Al

⟹ρ

Al

=2.7×ρ

water

=2.7×1000kg/m

3

=2700kg/m

3

I hope this will help you

Answer 2

Answer:

Relative density =density of substance /density of water

So, Density of substance =Relative density*density of water

In SI units,

Density of water=1000 kg/m^3

Density of aluminum = 2.7*1000 kg/m^3

= 2700 kg/m^3

In CGS units,

Density of water = 1 gm/cm^3

Density of aluminum = 2.7*1 gm/cm^3