Q.
A vector perpendicular to i^+j^+k^ is
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a
i^-j^+k^
b
i^-j^-k^
c
-i^-j^-k^
d
3i^+2j^-5k^
answer is D.
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Detailed Solution
We see that the dot product of i^+j^+k^ with 3i^+2j^-5k^ is zero.
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