In a metre bridge experiment null point is obtained at 20 cm from one – McqOptions

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1.	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 4X against Y [AIEEE 2004]
A.	50 cm
B.	80 cm
C.	40 cm
D.	70 cm
Answer» B. 80 cm

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