Question 8

At a distance R from a point source of sound, the intensity of the sound is I. At what distance from the source is the intensity I/4?

• A.    4R
• B.    2R
• C.    R/2
• D.    R/4
• E.    R/8
• F.    Not close to any of the above

Formula Sheet

Question 7

Question 9

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