Two Speakers Are Driven Exactly Out of Phase with Each

question 49

Multiple Choice

Two speakers are driven exactly out of phase with each other at 256 Hz.If a microphone is placed on the line between the two speakers exactly in the middle of the line,what is possibly the distance between the microphone and each speaker? The speed of sound is 340 m/s.

• A) 0.75 m
• B) 0.38 m
• C) Can be any distance at all
• D) 1.50 m
• E) 0.94 m

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