Question

The relative density of lead is 11.3. Its density in SI unit is then

• A. $1.13\times {10}^3$
• B. $1.13\times {10}^2$
• C. $1.13\times {10}^4$
• D. 11.3

Answer 1

The correct option is C $1.13\times {10}^4$

Relative Density = $\frac{Densityofasubstance}{Densityofwater}$
$\therefore$ Density of lead = $11.3\times 1\times {10}^{3}kg{m}^{-3}$
($\because$ Density of water = $1\times {10}^{3}kg{m}^{-3}$)
= $11.3\times {10}^{3}kg{m}^{-3}$ = $1.13\times {10}^{4}kg{m}^{-3}$