Two In-Phase Loudspeakers Are Some Distance Apart

question 44

Multiple Choice

Two in-phase loudspeakers are some distance apart.They emit sound with a frequency of .You move between the speakers,along the line joining them,at a constant speed of .What beat frequency do you observe? The speed of sound in the room is .

• A) 13 Hz
• B) 431 Hz
• C) 26 Hz
• D) 4.7 Hz
• E) 118 Hz

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