Assertion : Vector addition is commutative.
Reason : Two vectors may be added graphically using head-to-tail method or parallelogram method.

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If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

answer is B.

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Detailed Solution

Vector addition is commutative,

i.e., $\vec{A} + \vec{B} = \vec{B} + \vec{A}$ , where $\vec{A}$ and $\vec{B}$ are two vectors.

Two vectors $\vec{A}$ and $\vec{B}$ may be added graphically using head-to-tail method or parallelogram method.

But reason is not correct explanation for assertion.

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