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 XltY, then where will be the new position of the null point from the same end, if one deicdes to balance a resistance of 4 X against YA. 40 cmB. 80 cmC. 50 cmD. 70 cm

In a meter bridge experiment null point is obtained at 20 cm. from one

1.	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 XltY, then where will be the new position of the null point from the same end, if one deicdes to balance a resistance of 4 X against YA. 40 cmB. 80 cmC. 50 cmD. 70 cm
Answer» Correct Answer - C (c) In the first case `X/Y = 20/80 = 1/4` In the second case `(4X)/Y = l/(100-l) rArr l = 50`.

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