The intensity of the waves from a point source at a distance d from the source is I . At what distance from the sources is the intensity equal to 2I?

Name: The intensity of the waves from a point source at a distance d from the source is I . At what distance from the sources is the intensity equal to 2I?
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Question

The intensity of the waves from a point source at a distance  d  from the source is  I . At what distance from the sources is the intensity equal to  2I?

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The Answer of The intensity of the waves from a point source at a distance  d  from the source is  I . At what distance from the sources is the intensity equal to  2I?

The Intensity of the Waves from a Point Source at a Distance