When resonance occurs, what is typically produced?

• A. Sound is absorbed.
• B. Sound becomes inaudible.
• C. Sound waves are amplified.
• D. Sound waves are completely reflected.

Answer: (C)

Resonance occurs when the frequency of an external force matches the natural frequency of a system, leading to an increase in amplitude. In this context, when sound waves interact with a system that has a resonant frequency, those sound waves can be amplified. This amplification results from the constructive interference of sound waves, where the waves reinforce each other, leading to a louder sound.

The phenomenon of resonance is commonly observed in musical instruments, where specific frequencies are enhanced to create rich tones. It is also instrumental in understanding vocal tract behavior in speech production. The correct answer highlights the key aspect of resonance, which is the amplification of sound waves rather than their absorption, inaudibility, or complete reflection.