In a meter bridge experiment, null point is obtained at `20 cm` from one end of the wire when resistance `X` is balanced against

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. 50 cm
B. 80 cm
C. 40 cm
D. 70 cm

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

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