If the vectors a= i- j+2 k, b=2 i+4 j+ k and c=p i+ j+q k are mutually orthogonal, then (p,q) is equal to

MHT CET 2024 Mathematics question

If the vectors , and are mutually orthogonal, then is equal to

Answer: (C)

Mutually orthogonal means every pair has zero dot product. First , so that pair is already orthogonal. gives . gives . Solve: from the

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Question ID VK-098999