A block of weight 100 N is suspended by copper and steel wires of same cross sectional area 0.5 cm² and, length √3 m and 1 m, respectively. Their other ends are fixed on a ceiling as shown in figure. The angles subtended by copper and steel wires with ceiling are 30° and 60°, respectively. If elongation in copper wire is (Δl꜀) and elongation in steel wire is (Δlₛ), then the ratio Δl꜀/Δlₛ is _____. [Young’s modulus for copper and steel are 1 × 10¹¹ N/m² and 2 × 10¹¹ N/m², respectively.]