MCAT Physical : Other Sound Principles

Study concepts, example questions & explanations for MCAT Physical

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Example Questions

Example Question #3 : Waves

A guitar player uses beats to tune his instrument by playing two strings. If one vibrates at 550 Hz and the second at 555 Hz, how many beats will he hear per minute?

Possible Answers:

Correct answer:

Explanation:

Two waves will emit a beat with a fequency equal to the difference in frequency of the two waves. In this case the beat frequency is:

    (beats per second)

Convert to beats per minute:

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