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QJEEAdv06Ma2c80: JEE Advanced 2006 Physics - Class 11 JEEAdv06Ma2c80 Solution: Let and A vector in the plane of and whose projection on is is

Let a→=i^+2j^+k^, b→=i^−j^+k^\overrightarrow a = \widehat i + 2\widehat j + \widehat k,\,\overrightarrow b = \widehat i - \widehat j + \widehat k and c→=i^+j^−k^.\overrightarrow c = \widehat i + \widehat j - \widehat k. A vector in the plane of a→\overrightarrow a and b→\overrightarrow b whose projection on c→\overrightarrow c is 13,{1 \over {\sqrt 3 }}, is

Multiple Choice Options

  • A 4i^−j^+4k^4\widehat i - \widehat j + 4\widehat k
  • B 3i^+j^−3k^3\widehat i + \widehat j - 3\widehat k
  • C 2i^+j^−2k^2\widehat i + \widehat j - 2\widehat k
  • D 4i^+j^−4k^4\widehat i + \widehat j - 4\widehat k

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