How to find out the first intensity minimum

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Reference no: EM1392454

Q. Two loudspeakers are placed 3.00 m apart. They emit 440 Hz sounds, in phase. A microphone is placed d = 3.10 m distant from a point midway between the two speakers, where an intensity maximum is recorded.

(a) How far should the microphone be moved to the right to find out the first intensity minimum?

(b) Assume the speakers are reconnected so that the 440 Hz sounds they emit are accurately out of phase. At what positions (how far should the microphone be moved to the right) are the intensity maximum and minimum now?

Reference no: EM1392454

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