NEET Sample Paper NEET Sample Test Paper-85

  • question_answer
    Figure shows three oscillating LC circuit with identical inductors and capacitors. If \[{{t}_{1}},{{t}_{2}},{{t}_{3}}\] are the time taken by the circuits I, II, III for fully discharge, then

    A) \[{{t}_{1}}>{{t}_{2}}>{{t}_{3}}\]     

    B)        \[{{t}_{1}}<{{t}_{2}}<{{t}_{3}}\]

    C) \[{{t}_{2}}<{{t}_{1}}<{{t}_{3}}\]     

    D)        \[{{t}_{3}}=\sqrt{{{t}_{1}}{{t}_{2}}}\]

    Correct Answer: C

    Solution :

    [c] Time period, \[{{T}_{1}}=2\pi \sqrt{LC},\]\[{{T}_{2}}=2\pi \sqrt{\frac{LC}{2},.}\] \[{{T}_{3}}=2\pi \sqrt{2LC}\] Clearly\[{{t}_{2}}<{{t}_{1}}<{{t}_{3}}.\]


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