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J & K CET Medical J & K - CET Medical Solved Paper-2007

  • question_answer
    In a meter bridge experiment, the ratio of the left gap resistance to right gap resistance is 2 : 3, the balance point from left is

    A)  60 cm                                  

    B)  50 cm

    C)  40 cm                                  

    D)  20 cm

    Correct Answer: C

    Solution :

                     In a meter bridge \[\frac{{{R}_{1}}}{{{R}_{2}}}=\frac{1}{100-l}\] \[\frac{2}{3}=\frac{1}{(100-l)}\] \[\Rightarrow \]               \[200-2l=3l\] \[\Rightarrow \]               \[5l=200\] \[\therefore \]  \[l=40\text{ }cm\]


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