JEE Main & Advanced Sample Paper JEE Main Sample Paper-28

  • question_answer
    The time period of a freely suspended magnet does not depend on:

    A)  its length

    B)  pole straight

    C)  the horizontally component or earth's magnetic field

    D)  length of suspension wire.

    Correct Answer: D

    Solution :

    \[T=2\pi \sqrt{\frac{I}{MB}}=2\pi \sqrt{\frac{mass\times {{l}^{2}}/12}{({{m}_{0}}\times 2l)B}}\]


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