When two vectors are perpendicular, their(a) Dot product is zero(b) Cross product is zero(c) Both are zero(d) Both are not necessarily zeroThe question was asked during an interview for a job.I want to ask this question from Dot and Cross Product in division Vector Analysis and Applications of Electromagnetic Theory

When two vectors are perpendicular, their(a) Dot product is zero(b) Cr

1.	When two vectors are perpendicular, their(a) Dot product is zero(b) Cross product is zero(c) Both are zero(d) Both are not necessarily zeroThe question was asked during an interview for a job.I want to ask this question from Dot and Cross Product in division Vector Analysis and Applications of Electromagnetic Theory
Answer» The CORRECT answer is (a) DOT product is zero For explanation: Dot product of two perpendicular vectors is GIVEN by A.B = \|a\|\|b\|cos 90, which is zero. THUS, dot product is zero and vectors are perpendicular.

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