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In a metrebridge when R and X are the resistances in left gap and right...

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In a metrebridge when R and X are the resistances in left gap and right gap respectively the null point is obtained at 40 cm from the left Now when the resistance R is in left gap and X in right gap then the null point is obtained at 60 cm from the left When the resistance in left gap is changed to R R the null point will be at A B C D 25 6 cm from left 68 4 cm from left 31 6 cm from left 74 4 cm from left

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