Vector addition: Minimum number of unequal vectors required to yield zero resultant Assume vectors lie in a plane as needed; they must be of unequal magnitudes. Choose the correct option.

IIT JEE Physics Difficulty: Easy
Choose an option
  • A
    2
  • B
    3
  • C
    4
  • D
    5

Answer

Correct Answer: 3

Explanation

ApproachTwo vectors give zero resultant only if equal and opposite (thus equal magnitudes). For unequal magnitudes, at least three vectors can form a closed triangle → net zero.

VerificationConstruct a triangle with three sides of different lengths; head-to-tail sum returns to origin ⇒ resultant 0.

Final Answer3

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