A) have a high pitch
B) have a low pitch
C) are loud
D) are soft
Correct Answer: A
Solution :
This question is successfully answered by the student who knows the relationship between The frequency of a sound wave and its pitch. The pitch of a sound wave is directly proportional to its frequency. The frequency of the sound waves produced increases when the strings of a guitar are tightened. Hence, the sound waves produced from the tightened strings of a guitar have a high pitch. The correct answer is A.
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