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WB JEE Medical WB JEE Medical Solved Paper-2006

  • question_answer
    A circuit consists of an inductance of 0.5 mH and a capacitor of\[\text{20}\,\text{ }\!\!\mu\!\!\text{ F}\text{.}\] The frequency of the LC oscillations is approximately :

    A)  400 Hz                                 

    B)  88 Hz

    C)  1600 Hz                               

    D)  2400 Hz

    Correct Answer: C

    Solution :

                     \[f=\frac{1}{2\pi \sqrt{LC}}\] \[\therefore \]  \[f=\frac{1}{2\times 3.14\sqrt{0.5\times {{10}^{-3}}\times 20\times {{10}^{-6}}}}\] \[=\frac{1}{2\times 3.14\times {{10}^{-4}}}\] \[\approx 1600\,Hz.\]


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