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

(a) 0.49×10⁴ N/m (b) 1.96×10⁴ N/m

(c) 4.9×10⁴ N/m (d) 0.196×10⁴ N/m

Answer-b

(22)

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