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J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    According to Moseley's law of X-rays the frequency (v) of a particular characteristic X-ray and the atomic number (Z) of the element depend on each other as

    A)  \[\sqrt{v}=k{{Z}^{2}}\]       

    B)  \[\sqrt{v}=\frac{h}{{{Z}^{2}}}\]

    C)  \[v=kZ\]     

    D)  \[\sqrt{v}=kZ\]

    Correct Answer: D

    Solution :

    According to Moseley?s law of X-rays \[\sqrt{v}=k(Z-b)\] where   k = proportionality constant, b = Shielding constant. Here        \[b=0\] \[\therefore \] \[\sqrt{v}=kZ\]


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