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A meter bridge is balanced by putting 20...

A meter bridge is balanced by putting `20pi` resistance in the left gap and `40pi` in the right, gap, if `40pi` resistance is now shunted with `40pi` resistance the shift in the null point towards right is nearly

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In a meter-bridge experiment with a resistance R_(1) in left gap and a resistance X in a right gap. null point is obtained at 40 cm from the left emf. With a resistance R_(2) in the left gap, the null point is obtainned at 50 cm from left hand. Find the position of the left gap is containing R_(1) and R_(2) in series.

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