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In a metre bridge experiment null point ...

In a metre 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 < Y`, then where will be the new position of the null point from the same end, if one decides to balance a resistance of 4 X against Y ?

A

50 cm

B

80 cm

C

40 cm

D

70 cm.

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