A resistance wire connected in the left gap of a meter bridge balances a \(10\, \Omega\) resistance in the right gap at a point which divides the bridge wire in the ratio \(3: 2 .\) If the length of the resistance wire is \(1.5 m ,\) then the length of \(1\, \Omega\) of the resistance wire is \(....... \times 10^{-2}\;m\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.