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VMMC VMMC Medical Solved Paper-2008

  • question_answer
    How many number of atoms are there in a cube based unit cell having one atom on each comer and two atoms on each body diagonal of cube?

    A) 8                                             

    B) 6                             

    C) 4                             

    D)        9

    Correct Answer: D

    Solution :

    There are four body diagonals. Atoms on the body diagonals are not shared by any other unit cell. Contribution by atoms on comers \[=8\times \frac{1}{8}=1\]and Contribution by atoms on body diagonal \[=2\times 4=8\]


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