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Vector Algebra question

2021 · 22 Jul · Shift 2 · Q47
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  5. /2021 · 22 Jul · Shift 2 · Q47

Vector Algebra question

2021 · 22 Jul · Shift 2 · Q47

JEE MainPhysicsVector AlgebraMCQ+4 / −1
What will be the projection of vector A→=i^+j^+k^\overrightarrow A = \widehat i + \widehat j + \widehat kA=i+j​+k on vector B→=i^+j^\overrightarrow B = \widehat i + \widehat jB=i+j​ ?
  1. A
    2(i^+j^+k^)\sqrt 2 (\widehat i + \widehat j + \widehat k)2​(i+j​+k)
  2. B
    (i^+j^)(\widehat i + \widehat j)(i+j​)
  3. C
    2(i^+j^)\sqrt 2 (\widehat i + \widehat j)2​(i+j​)
  4. D
    2(i^+j^+k^)2(\widehat i + \widehat j + \widehat k)2(i+j​+k)
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