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

question 2

Multiple Choice

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?

• A) d/2
• B) \(\text{d}/ \sqrt { 2 }\)
• C) d/4
• D) d/8

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