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(b) A is perpendicular to B
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Topic - Vector Analysis
We must know some formulae before we solve the problem:
- If the two vectors and perpendicular to each other, then their dot product will be zero , i.e.,
- If be the angle between the two vectors and , then we write
- If be the magnitude of , then
- Vector scalar products satisfy commutative property, i.e., .
- For any vector , we can write
Let us solve the given problem now.
Given,
Squaring both sides, we get
Thus we conclude that the given two vectors and are perpendicular to each other.
Answer: Option (b) is correct.
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