BCECE Engineering BCECE Engineering Solved Paper-2007

  • question_answer
    Which of the following is not possible?

    A) \[n=2,\,l=1,m=0\]           

    B)  \[n=2,\,l=0,m=-1\]

    C)  \[n=3,\,l=0,m=0\]

    D)  \[n=3,\,l=1,m=-1\]

    Correct Answer: B

    Solution :

    Kya Idea: For \[n=0\]to \[\infty ,l=0\]to \[n-1,m=-l\]to 0 to \[+l,s=\frac{1}{2}\] or \[-\frac{1}{2}\] use this information to find the correct choice (a) \[n=2,l=1,m=0\]it is possible (b) \[n=2,l=0,\,m=-1\]it is not possible because if \[l=0,\,m\]must be 0. The value of m totally depends upon the value of \[l\]\[(m=-l\,to\,+l).\] (c) \[n=3,\,l=0,m=0\]it is possible (d) \[n=3,l=1,m=-1\]it is possible.


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