9. The adjacent graph shows the extension

The adjacent graph shows the extension (Δl) of a wire of length 1m suspended from the top of a roof at one end with a load W connected to the other end. If the cross sectional area of the wire is 10^-6 m²  calculate the young’s modulus of the material of the wire

(a) 2×10¹¹ N/m²

(b) 2×10^–11 N/m²

(c) 3×10^–12 N/m²

(d) 2×10^–13 N/m²

Answer-a

(14)