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Question 5146
NEET Physics · Medium

Basic Mathematics & Vectors: Mixed Vectors & Calculus MCQ

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Mixed Vectors & CalculusMediumQuestion 5146

Question

The scalar product of a vector with itself, A·A, equals:
  1. A
    0
  2. B
    A² (square of magnitude)
    Correct
  3. C
    1
  4. D
    2A

Correct answer

A² (square of magnitude)

Explanation

A·A = |A||A|cos0° = A². The dot product of a vector with itself equals the square of its magnitude.

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