Two loudspeakers are placed 3.00 apart, as shown in the figure . They emit 533 s

Question

Two loudspeakers are placed 3.00 apart, as shown in the figure . They emit 533 sounds, in phase. A microphone is placed 3.20 distant from a point midway between the two speakers, where an intensity maximum is recorded.

How far must the microphone be moved to the right to find the first intensity minimum?

Suppose the speakers are reconnected so that the 533 Hz sounds they emit are exactly out of phase. At what positions are the intensity maximum and minimum now? (Xmax= ____ m to the left or right of the midpoint) (Xmin=____ m to teh left or right of th emidpoint)

Explanation / Answer

distance to be moved=D*/2d=0.34metre

b)now the maximum and minimum are just interchanges i.e maximum at the right point we just calculated and minimum at the centre

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