Question

Resonance refers to an effect in which the
a. whole instrument vibrates on its natural or fundamental frequency
b. intensity of a sound decreases over time
c. pitch of a note is compared to a pure tone
d. pitch changes when two waves with similar frequencies interfere with each other

Answer 1

The correct answer is a. whole instrument vibrates on its natural or fundamental frequency

Resonance is a process in which a certain instrument vibrates due to force from another vibrating system being applied to it. An example of this would be a woodwind instrument that vibrates when you blow into it, with a blow being a force of another vibrating system that is your lungs.