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OABC is a tetrahedron. The position vect...

OABC is a tetrahedron. The position vectors of A, B and C are `i, i+j and j+k`, respectively. O is origin. The height of the tetrahedron (taking ABC as base) is

A

`(1)/(2)`

B

`(1)/(sqrt(2))`

C

`(1)/(2sqrt(2))`

D

None of these

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The correct Answer is:
(b)
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