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NEET 2020

NEET 2020 Physics question on Current Electricity

A resistance wire connected in the left gap of a metre bridge balances a 10 Ω10\,\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 Ω1\,\Omega of the resistance wire is :
  1. A.
    1.0×10−1 m1.0 \times 10^{-1}\,\text{m}
  2. B.
    1.5×10−1 m1.5 \times 10^{-1}\,\text{m}
  3. C.
    1.5×10−2 m1.5 \times 10^{-2}\,\text{m}
  4. D.
    1.0×10−2 m1.0 \times 10^{-2}\,\text{m}
Show answer

Correct option: A

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