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NEET Sample Paper NEET Sample Test Paper-28

  • question_answer
    The \[{{K}_{\alpha }}\] line form molybdenum (atomic number = 42) has a wavelength of\[0.7078\overset{o}{\mathop{A}}\,\]. The wavelength of \[{{K}_{\alpha }}\]line of zinc (atomic number = 30) will be :-

    A)  \[1\overset{o}{\mathop{A}}\,\]                                              

    B)  \[1.4148\overset{o}{\mathop{A}}\,\]

    C)  \[0.3541\overset{o}{\mathop{A}}\,\]                   

    D)  \[0.5\overset{o}{\mathop{A}}\,\]

    Correct Answer: B

    Solution :

    \[{{\lambda }_{k\alpha }}\propto \frac{1}{{{(Z-1)}^{2}}}\]


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