CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2006

  • question_answer
    In a cubic unit cell of bcc structure, the lattic points (i.e., number of atoms) are:

    A)  2                            

    B)         6a

    C)  8                            

    D)         12

    E)  5

    Correct Answer: A

    Solution :

    Number of lattice points in a crystal structure will be \[n=\frac{{{N}_{C}}}{8}+\frac{{{N}_{F}}}{2}+\frac{{{N}_{1}}}{1}\] In bcc crystal,\[{{N}_{C}}=8,{{N}_{F}}=0\]and\[{{N}_{i}}=1\] \[n=\frac{8}{8}+\frac{0}{1}+\frac{1}{1}=2\]


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