Question

To raise the pitch of a certain piano string, the piano tuner:

• A. Loosens the string
• B. Tightens the string
• C. Shortens the string
• D. Lengthens the string

Answer 1

The correct option is B Tightens the string

Answer is B.

The pitch of a note is determined by the frequency of vibrations. For a vibrating string, the frequency is determined by the string's length, mass, and tension. Piano strings are wrapped around tuning pins, which are turned to adjust the tension of the strings. T
That is, to raise the pitch of a certain piano string, the piano tuner, tightens the string.