JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Cathode Rays and Positive Rays

  • question_answer
    Order of  q/m  ratio of proton, \[\alpha \]-particle and electron is             [AFMC 2004]

    A)            \[e>p>\alpha \]                  

    B)            \[p>\alpha >e\]

    C)            \[e>\alpha >p\]                  

    D)            None of these

    Correct Answer: A

    Solution :

               \[\because \,\,\,{{m}_{e}}<{{m}_{p}}<{{m}_{\alpha }}\] Þ \[{{\left( \frac{q}{m} \right)}_{e}}>{{\left( \frac{q}{m} \right)}_{p}}>{{\left( \frac{q}{m} \right)}_{\alpha }}\]


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