MHT CET 2024 Physics question
When the two known resistance 'R' and 'S' are connected in the left and right gaps of a meter bridge respectively, the null point is found at a distance '' from the zero end of a meter bridge wire. An unknown resistance 'X' is now connected in parallel with 'S' and null point us found at a distance '' from zero end of meter bridge wire. The unknown resistance 'X' is
Answer: (A)
Solution
At balance, , so . With in parallel with the right-gap resistance is and , so . Since $
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