Tuning Fork a Has a Frequency of 440 Hz

question 28

Multiple Choice

Tuning fork A has a frequency of 440 Hz.When A and a second tuning fork B are struck simultaneously,four beats per second are heard.When a small mass is added to one of the tines of B,the two forks struck simultaneously produce two beats per second.The original frequency of tuning fork B was

• A)448 Hz
• B)444 Hz
• C)438 Hz
• D)436 Hz
• E)432 Hz

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