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If a vector 2i + 3j + 8k is perpendicular to the vector 4 j- 4i + αk , then the value of α is

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If a vector 2i + 3j + 8k is perpendicular to the vector 4 j- 4i + αk , then the value of α is

(a) 1/2

(b) -1/2

(c) 1

(d) -1

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1 Answer

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Best answer

Correct option (b) -1/2

Explanation:

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