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NEET Sample Paper NEET Sample Test Paper-15

  • question_answer
    If \[\text{e=1}\text{.60206}\times \text{1}{{\text{0}}^{-19}}C,\]\[e/m=1.75875\]\[\times {{10}^{11}}C\]\[k{{g}^{-1}}\] then the mass of electron is

    A) \[19.091\times {{10}^{-31}}kg\]

    B) \[11.5830\times {{10}^{-31}}kg\]

    C) \[6.9091\times {{10}^{-31}}kg\]

    D) \[9.1091\times {{10}^{-31}}kg\]  

    Correct Answer: D

    Solution :

    Mass of electron\[=\frac{e}{e/m}\] \[=\frac{1.60206\times {{10}^{-19}}}{1.75875\times {{10}^{11}}}=9.1091\times {{10}^{-31}}\,kg.\] Hence, the correct option is [d].


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