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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class12  >>  Wave Optics
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Two waves have a phase difference of $\pi $. and they have light intensities I and 9I. What will be the resultant intensity .

$(a)\;I \\ (b)\;10\;I \\ (c)\;3\;I \\ (d)\;4\;I $

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