JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Graphical Questions

  • question_answer
    The graph that correctly represents the relation of frequency n of a particular characteristic X-ray with the atomic number Z of the material is

    A)                                 

    B)                          

    C)                                 

    D)

    Correct Answer: C

    Solution :

               By Moseley?s law, \[\sqrt{\nu }=a(Z-b)\] or, \[\nu ={{a}^{2}}{{(Z-b)}^{2}}\] Comparing with the equation of a parabola, \[{{y}^{2}}=4ax\] it conforms to graph c.


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