If the vectors A . B = 0, either the vectors are mutually perpendicular to each other or one or both vectors are:
Correct answer: B. Null vector
- A. Unit vectors
- B. Null vector
- C. Base vectors
- D. None of the above
Explanation
A null vector (also known as a zero vector) is a vector whose components are all zero. If either or both vectors are null vectors, their dot product will be zero because one or more components of the vectors are zero.
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About Vectors and Equilibrium
Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
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