Test Academy | If a load of 9kg is suspended on a wire, the increase in length is 4.5 mm. The force constant of the wire is 0.49 x 10⁴ N / m, 1.96 x 10⁴ N / m, 4.9 x 10⁴ N / m, 0.196 x 10⁴ N / m

Question

If a load of 9kg is suspended on a wire, the increase in length is 4.5 mm. The force constant of the wire is

Options :