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In a meter bridge experiment, null point...

In a meter bridge experiment, null point is obtained at `20 cm` from one end of the wire when resistance `X` is balanced against another resistance `Y`. If `X lt Y`, then the new position of the null point from the same end, if one decides to balance a resistance of `4 X` against `Y` will be at.

A

40 cm

B

80cm

C

50 cm

D

70 cm

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