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As per your syllabus, the dot product of two PERPENDICULAR vectors is which value?
AEqual to product of magnitudes
BEqual to half the product
CZero
DNegative product
Answer & Solution
Correct answer: C. Zero
Your syllabus: cos 90° = 0 ⇒ A · B = 0. Hence i·j = j·k = k·i = 0 for unit vectors.
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