A block of weight 100N is suspended by copper and steel wires of same cross sectional area 0.5$c{m}^2$ and, length  $\sqrt{3}$m and 1m, respectively. Their other ends are fixed on a ceiling as shown in figure. The angles subtended by copper and steel wires with ceiling are 30º and 60º, respectively. If elongation in copper wire is $\left(\Delta l_C\right)$ and elongation in steel wire is  $\left(\Delta l_S\right)$, then the ratio $\frac{\Delta l_C}{\Delta l_S}$ is___
[Young’s modulus for copper and steel are $1\times {10}^{11}N/m^2$ and  $2\times {10}^{11}N/m^2$, respectively.]