Question

If the density of Aluminium is 2700 $kg{m}^{-3}$. Then its value in the CGS system is :

• A. $2700gc{m}^{-3}$
• B. $270gc{m}^{-3}$
• C. $27\times {10}^5$ $gc{m}^{-3}$
• D. $2.7gc{m}^{-3}$

Answer 1

Answer: (D)

$2.7gc{m}^{-3}$

$\rho =2700kg{m}^{-3}$

where $1kg=1000g$

and $1m={10}^{2}cm$

$\therefore \rho =\frac{2700\times {10}^{3}g}{({10}^{2}cm{)}^3}$

$=\frac{27\times {10}^{5}g}{{10}^{6}c{m}^3}$

$=2.7gc{m}^{-3}$