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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Units and Measurement
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If vectors $\overrightarrow{A} = \cos wt \hat i +\sin w + \hat j$ and $\overrightarrow{B} = \cos wt/2 \hat i +\sin wt/2 + \hat j$ are functions of time , then the value of t at which are orthogonal to each other is

$\begin{array}{1 1} t= \frac{\pi}{w} \\ t=0 \\ t= \frac{\pi}{4w} \\ t= \frac{\pi}{2w} \end{array} $

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