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In the cube of side 'a' shown in the fig...

In the cube of side 'a' shown in the figure, the vector from the central point of the face ABOD to the central point of the face BEFO will be :

A

`(1)/(2)a(hatk-hati)`

B

`(1)/(2)a(hati-hatk)`

C

`(1)/(2)a(hatj-hati)`

D

`(1)/(2)a(hatj-hatk)`

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