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Railways Basic Science and Engineering Units and Measurements / मात्रक और मापन Question Bank Unit and Measurements

  • question_answer
    The force F on a sphere of radius a moving in a medium with velocity v is given by\[F=6\pi \eta av\] The dimensions of \[\eta \] are

    A) \[[M{{L}^{-3}}]\]               

    B) \[[M{{L}^{-2}}]\]

    C) \[[M{{L}^{-1}}]\]               

    D) \[[M{{L}^{-1}}{{T}^{-1}}]\]

    Correct Answer: D

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