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Question

Three vectors satisfy the relation AB=0andAC=0,thenA is parallel to

A
C
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B
B
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C
B×C
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D
BC
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Solution

The correct option is A B×C
From the given 2 conditions we can say that A is perpendicular to both B and C.
From the definition of cross product, B×C is also perpendicular to both B and C. Thus A must be parallel to B×C.

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