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Experiment set up of a meter bridge .Whe...

Experiment set up of a meter bridge .When the two unknown resistance `X and Y ` are intserted, the null point `D` is obtained `40 cm` from the end A .When a resistance of `30 Omega` is connected in series with `X` the mill point shift by `10 cm` .Find the position of the point when the `30 Omega` resistance is connected in series with X, the null point shifts by 10 cm. Find the position of the null point when the `30 Omega` resistance is connected in series with resistance `Y` instead of `X`. Determine the values of resistances `X and Y`

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