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[" 29.Two unknown resistances are connec...

[" 29.Two unknown resistances are connected in two gaps of a meter-bridgc.The null point is "],[" obtained at "40cm" from left end."A30Omega" resistance is connected in series with the smaller of "],[" the two resistances,the null point shifts by "20cm" to the right end.The value of smaller "],[" resistance in "Omega" is "],[[" A) "12," B) "24," C) "36," D) "48]]

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