There are three sources of sound of equal intensities with frequency 
. What is beat frequency. heard if all are sounded simultaneously?
Text Solution
Verified by ExpertsThe correct answer is:
D
Beats of frequency 2 always coincide with the beat of frequency 6, and those are not heard distinctively. Beats of frequency 4 coincides twice with beats of frequency 6. Hence, two distinct maxima are heard. Total 8 beat frequencies are heard.
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