A guitar is perfectly tuned. The tension on its strings is then increased. Which of the following is true?
A) The frequencies of sounds from the guitar are higher than before.
B) The wavelengths of sounds from the guitar are longer than before.
C) The speed of sounds from the guitar is larger than before.
D) The amplitudes of sounds from the guitar are larger.

Question

Quizplus · Accepted Answer

Increasing tension on the strings of a guitar results in an increase in frequency, causing the sounds produced to be higher. This is because the frequency of a sound wave is directly proportional to the tension in the string. Additionally, this increase in tension will also increase the speed of sound in the strings, as well as the amplitude of the sounds produced to a certain degree. However, the wavelength of the sound waves will decrease, as the speed of sound increases while the frequency remains constant.

A Guitar Is Perfectly Tuned