Two speakers face each other, and they each emit a sound of wavelength ( lambda)

Question

Two speakers face each other, and they each emit a sound of wavelength (lambda). One speaker is 180 (degrees) %u2218out of phase with respect to the other. If we separate the speakers by a distance1.5 (lambda) ,how far from the left-most speaker should we place a microphone in order to pick up the loudest sound? Ignore reflections from nearby surfaces. Select all that apply.

3/4 lambda 0  lambda 1/2  lambda 1/4  lambda   1     lambda Two speakers face each other, and they each emit a sound of wavelength (lambda). One speaker is 180 (degrees) %u2218out of phase with respect to the other. If we separate the speakers by a distance1.5 (lambda) ,how far from the left-most speaker should we place a microphone in order to pick up the loudest sound? Ignore reflections from nearby surfaces. Select all that apply.

3/4 lambda 0  lambda 0  lambda 0  lambda 1/2  lambda 1/2  lambda 1/2  lambda 1/4  lambda 1/4  lambda 1/4  lambda   1     lambda

Explanation / Answer

0 lamda
1/2 lamda
1 lamda

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