A steel wire of radius 0.5 mm and Young’s modulus $2x{10}^{11}N{m}^{-2}$ carries a load of M. The length of wire is 1.0 m. A vernier scale with 10 division is attached to the end of this wire. Next to the steel wire is a reference wire to which a main scale of least count 1.0 mm is attached. The 10 division of the vernier scale coincides with 11 division of main scale. Initially the zero of vernier scale coincides with zero of main scale. If the load on the steel wire is increased by $\frac{22}{7}kg$, the Vernier scale division which coincides with main scale division is $(Takeg=10m{s}^{-2}and\pi =\frac{22}{7})$