In a meter bridge, the null point is found at a distance of $25\, cm$ from $A$. If now a resistance of $10\,\Omega $ is connected in parallel with $S$, the null point occurs at mid point of $AB$. The value of $R$ is ................. $\Omega$
A$6.67$
B$1.67$
C$2.67$
D$4.67$
Medium
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A$6.67$
a
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