9th Class Science Sample Paper Science Sample Paper-1

  • question_answer
    The e/m ratio of an electron is

    A) \[1.602\times {{10}^{-19}}C\,\,k{{g}^{-1}}\]

    B) \[1.76\times {{10}^{11}}C\,\,k{{g}^{-1}}\]

    C) \[1.76\times {{10}^{9}}C\,\,k{{g}^{-1}}\]

    D) \[-1.602\times {{10}^{10}}C\,\,k{{g}^{-1}}\]

    E) None of these

    Correct Answer: B


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