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Q.

Three vectors A→,B→ and C→ satisfy the relation A→⋅B→=0 and A→⋅C→=0. The vector A→ is parallel to

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a

B→

b

C→

c

B→×C→

d

B→+C→

answer is C.

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Detailed Solution

If A→⋅B→=0,A→ is perpendicular to B→. If A→⋅C→=0,A→ is perpendicular to C→ So A→ is perpendicular to both B→ and C→ .  Also B→×C→ is perpendicular to both B→ and C→ . Hence, A→ is  parallel to B→×C→ .
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