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Questions  >>  CBSE XII  >>  Math  >>  Vector Algebra
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If $ \overrightarrow a . \overrightarrow a = 0$ and $ \overrightarrow a . \overrightarrow b = 0$, then what can be concluded about the vector $\overrightarrow b$?

$\begin{array}{1 1} (A) \overrightarrow b\; is \;collinear \;vector. \\ (B) \overrightarrow b\; is \;unit \;vector. \\ (C) \overrightarrow a\; and \;\overrightarrow b\;are \;equal\; vectors. \\ (D) \overrightarrow b is\; any\; vector. \end{array} $

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