Two friends were playing on identical guitars whose strings were adjusted to give notes of the same pitch. Will the quality of the two notes be the same? Give a reason for your answer.

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(NO) The quality of the two notes need not be the same.
The pitch of a note is determined by its frequency.
The quality (or timbre) of a sound depends upon the number,distribution,and relative intensity of the different harmonics and overtones produced by the instrument.
Even if two guitars are identical,the way they are played,the material of the strings,and the resonance of the wooden body can vary,leading to differences in the overtones produced,thus resulting in different sound qualities.

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