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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2000

  • question_answer
    In a face centred cubic cell, an atom at the face contributes to the unit cell:

    A)  \[1/4part\]

    B)  \[1/8part\]

    C)  \[1part\]      

    D)    \[1/2part\]

    Correct Answer: D

    Solution :

    In FCC unit cell, the atoms occupy all the eight corners of the cube and also the centre of the six faces of the cube. An atom at the centre of the face is shared by two unit cells. Therefore, it contributes \[\frac{1}{2}\] to a particular cell.


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