Question

multiple choice question
the mixing of reflected sounds with the original sound waves is called
o reverberation
o rarefaction
o the doppler effect
o refraction

Explanation:

• Reverberation: When sound waves reflect multiple times and mix with the original sound, it's called reverberation. For example, in an empty hall, you can hear a prolonged sound after a single clap due to reverberation.
• Rarefaction: It is a region in a sound wave (longitudinal wave) where the particles are spread apart. It is related to the wave - particle nature of sound but not about the mixing of reflected and original sounds.
• Doppler effect: This is the change in frequency of a wave (sound in this case) due to the relative motion between the source of the wave and the observer. It has nothing to do with the mixing of reflected and original sound waves.
• Refraction: Refraction of sound is the bending of sound waves when they pass from one medium to another (where the speed of sound changes). It is not about the mixing of reflected and original sounds.

Answer:

reverberation