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If a vector (2hati+3hatj+8hatk) is perpe...

If a vector `(2hati+3hatj+8hatk)` is perpendicular to the vector `(4hatj-4hati+alpha hatk)`, then the value of `alpha` is :

A

`(1)/(2)`

B

`-(1)/(2)`

C

1

D

`-1`

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The correct Answer is:
B
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