Q.
If the balance point is obtained at the25th cm in a metre bridge the resistances in the left and right gaps are in the ratio of
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a
7 : 13
b
13 : 7
c
9 : 11
d
1 : 3
answer is D.
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Detailed Solution
Using Wheatstone principle PQ=RS=l100−l=25100−25=2575=13
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