MHT CET 2023 Physics question
In meter bridge experiment, null point was obtained at a distance '' from left end. The values of resistances in the left and right gap are doubled and then interchanged. The new position of the null point is
Answer: (A)
Solution
Initially, with left-gap resistance and right-gap resistance : . Doubling both gives and , so their ratio is unchanged. Interchanging them makes the left gap and the right gap , so $ =
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