Consider a region in free space bounded ...

Consider a region in free space bounded by the surfaces of an imaginary cube having sides of length a as shown in the diagram. A charge +Q is placed at the centre O of the cube. P is such a point outside the cube that the line OP perpendicularly intersects the surface ABCD at R and also `OR=a//2`. A charge +Q is placed at point P also. What is the total electric flux through the five faces of the cube other than ABCD?

A

`Q/(epsilon_(0))`

B

`(5Q)/(6epsilon_(0))`

C

`(10Q)/(6epsilon_(0))`

D

zero`

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