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Questions  

A vector perpendicular to both the vectors 2i^3j^ and 3i^2j^ is

a
j^+5k^
b
j^−5k^
c
i^+j^−5k^
d
7k^

detailed solution

Correct option is D

Dot product of 7k^ with the given vectors is zero.Hence it is perpendicular to both the given vectors.

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