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The area of cross-section of a wire of length 1.1 metre is 1$m{m}^{2}.$It is loaded with 1 kg. If Young's modulus of copper is $1.1×{10}^{11}N/{m}^{2},$ then the increase in lenght will be (If $g=10m/{s}^{2}$)

(a) 0.01 mm                (b) 0.075 mm

(c) 0.1 mm                  (d) 0.15 mm