If a vector \((2\hat i +3\hat j+8\hat k)\) is perpendicular to the vector \((4\hat i-4\hat j+\alpha\hat k)\) then the value of \(\alpha\) is:
1. \(-1\)
2. \(\frac{-1}{2}\)
3. \(\frac{1}{2}\)
4. \(1\)
Subtopic: Scalar Product |
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AIPMT - 2005
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