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In a meter bridge experiment, the null p...

In a meter bridge experiment, the 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 where will be the new position of the null point from the same end, if one decides to balanced a resistance of `4X` against `Y`?

A

50 cm

B

80 cm

C

40 cm

D

70 cm

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The correct Answer is:
A
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