A pair of in-phase stereo speakers is placed side by side, 0.80m apart. You stand directly...

A pair of in-phase stereo speakers is placed side by side, 0.80m apart. You stand directly in front of one of the speakers, 1.2m from the speaker. What is the lowest frequency that will produce constructive interference at your location?

Expert Solution

The distance of the second speaker is

Hence, the path difference between two waves from the speakeres is

For the constructive interference, the path difference must be equal to wavelength

The frequency of the of the sound is

genius_generous answered 1 hour ago

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