NEET Sample Paper NEET Sample Test Paper-8

  • question_answer
    The wavelength of the \[{{K}_{a}}\] line for the uranium atom \[(z=92)\] is \[(R=10{{m}^{-1}})\]

    A)  \[1.6\overset{o}{\mathop{A}}\,\]                 

    B)  \[0.16\overset{o}{\mathop{A}}\,\]

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

    D)  \[2.0\overset{o}{\mathop{A}}\,\]

    Correct Answer: B

    Solution :

    As we know that, \[\frac{1}{n}=R{{(Z-1)}^{2}}\left( \frac{1}{n_{2}^{2}}-\frac{1}{n_{1}^{2}} \right)\] \[n=0.16A\]


You need to login to perform this action.
You will be redirected in 3 sec spinner