Question

Before playing the orchestra in a musical concert, a guitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting the:

• A. Loudness of sound
  
• B. Intensity of sound
  
• C. Frequency of guitar string with the other musical instruments
• D. Amplitude of sound
  

Answer 1

The correct option is C Frequency of guitar string with the other musical instruments

Frequency (pitch) of the vibration of the string depends on the tension and thickness of the string. By adjusting the tension of the guitar strings, the guitarist tries to match the frequency of the guitar with other musical instruments.
This is because only if all the musical instruments are in the same frequency, the output will be in unison. Otherwise, the music will not be pleasing to the audience.