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Concepts Of Physics MCQ Edition [Volume 1]PhysicsPhysics and Mathematics

Consider the vectors a = 4 i + 3 j and b = 3 i + 4 j . Calculate the magnitude of b .

Options

  1. A7
  2. B5
  3. C1
  4. D25

Correct answer

B. 5

Step-by-step solution

Given vector b = 3 i + 4 j . The magnitude of the vector is given by | b | = x^2 + y^2 . | b | = 3^2 + 4^2 | b | = 9 + 16 | b | = 25 = 5

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