JEE MATHEMATICS MCQ: DOT PRODUCT OF VECTORS

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l \mathbf{a}+m \mathbf{b}+n \mathbf{c}=\mathbf{0}

, where

l, m, n

are scalars and

\mathbf{a}, \mathbf{b}, \mathbf{c}

are mutually perpendicular vectors, then

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Correct option: C

l=m=n=0

Option C is correct because if mutually perpendicular vectors sum to zero, all scalar coefficients must be zero.

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