JEE Mathematics · Easy

Vectors: Mixed MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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MixedEasyQuestion 260016

Question

The dot product of perpendicular vectors is:
  1. A
    0
    Correct
  2. B
    1
  3. C
    −1
  4. D
    Undefined

Correct answer

0

Explanation

a⃗ · b⃗ = |a⃗||b⃗|cos θ. If θ = 90°, cos 90° = 0, so a⃗ · b⃗ = 0.