Which property of sound mainly determines how high or low a musical note sounds?

Which type of wave is produced in a flute when it is played?

The pitch of a guitar string can be increased by:

What part of a violin or guitar vibrates to produce sound?

In a drum, sound is produced due to the vibration of:

Which of the following instruments works on the vibration of an air column?

Loudness of sound in a musical instrument depends on:

Which factor determines the quality (timbre) of sound in musical instruments?

Why does a flute sound different from a guitar even if both play the same note?

Which physical principle explains the working of wind instruments like flute and clarinet?