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Motion in A Plane question

2005 · Q158
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Motion in A Plane question

2005 · Q158

NEETPhysicsMotion in A PlaneMCQ+4 / −1
If a vector 2i^+3j^+8k^2\widehat i + 3\widehat j + 8\widehat k2i+3j​+8k is perpendicular to the vector 4j^−4i^+αk^,4\widehat j - 4\widehat i + \alpha \widehat k,4j​−4i+αk, then the value of α\alphaα is
  1. A
    1/2
  2. B
    −-− 1/2
  3. C
    1
  4. D
    −-− 1.
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