ISRO Mechanical & Aerospace 2018 - Question 53

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Topic: Engineering Mathematics

Two non-zero vectors are parallel if their vector product is

  • A. 1
  • B. 0
  • C. -1
  • D. infinity

Answer: B. 0

Explanation: Vector product is |a||b|sin(theta). Two non-zero vectors are parallel if the angle between them is zero degrees, making sin(0) = 0, thus their vector product is zero.

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