Question

When two harmonic sound waves of close (but not equal) frequencies are heard at the same time, we hear

• A. a sound of similar frequency
• B. a sound of frequency which is the average of two close frequencies
• C. audibly distinct waxing and waning of the intensity of the sound with a frequency equal to the difference in the two close frequencies
• D. All of the above

Answer 1

Answer: (C)

Correct answer is (c) audibly distinct waxing and waning of the intensity of the sound with a frequency equal to the difference in the two close frequencies