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

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

Options

(a) -1
(b) 1/2
(c) -(1/2)
(d) 1

Correct Answer:

-(1/2)

Explanation:

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