Editor">
Editor Staff asked 1 year ago
Editor Staff asked 1 year ago
Unit vector which is perpendicular to the vector 4î + 3ĵ is _____
(a) ĵ
(b) î
(c) 4î + 3ĵ
(d)
z
^
This question was addressed to me in an online quiz.
This interesting question is from Vector Addition topic in chapter Motion in a Plane of Physics – Class 11
Select the correct answer from above options
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1 Answers
Editor">Editor Staff answered 1 year ago
Editor Staff answered 1 year ago
The correct option is (d)
z
^
Explanation: The dot product of any two vectors which are perpendicular to each other is 0. The dot product of all the vectors in the options with 4î + 3ĵ is non-zero except for
z
^
. Hence
z
^
is perpendicular to the given vector.
