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Questions  >>  CBSE XII  >>  Physics  >>  Wave optics
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The phase difference between two waves reaching a point is $ \frac{\pi}{2}$ . What is the resultant amplitude if the individual amplitude are 3 mm and 4 mm ?

$\begin{array}{1 1} 5\;mm \\ 50\;mm \\ 5\;cm \\ 500\;cm \end{array} $

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