A piano tuner compares the fundamental frequency generated by one of the piano s

Question

A piano tuner compares the fundamental frequency generated by one of the piano strings with the frequency from his tuning fork that and hears 5 beats per second. He then loosens the piano string just a bit and hears 7 beats per second. He concludes a. the string has a higher frequency than the tuning fork and must be loosened more to make the frequencies equal. b. the string has a lower frequency than the tuning fork and must be tightened more to make the frequencies equal. c. the string has a higher frequency than the tuning fork and must be tightened to make the frequencies equal. d. the string has a lower frequency than the tuning fork and must be loosened more to make the frequencies equal. e. this one observation on the effect of tightening the string does not tell him enough to allow any of these conclusions.

Explanation / Answer

i think answer is option b since the fork and hears 5 beats per second than 7 beats per second that loses by the piano string obviously that must be tightened more to make the frequencies must be equal.

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