Three sound waves of equal amplitude have frequencies (ν - 1), ν and (ν + 1) Hz. Find the number of beats produced per second.
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Three sound waves of equal amplitude have frequencies (ν − 1), ν and (ν + 1) Hz. Find the number of beats produced per second.

G1 Physics · Accepted Answer

Step 1: The three component frequencies are ν−1, ν and ν+1. Pairwise differences are 1, 1 and 2 Hz. Step 2: The envelope repeats with 1 Hz fundamental difference, giving one beat per second in the source convention. Final: A.