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Frequencies of sound waves are 330 Hz and 330/5.5 Hz. What is the frequency of beats?

1. 66 Hz and 60 Hz
2. 66 Hz and 6 Hz
3. 60 Hz and 6 Hz
4. 66 Hz and 66 Hz

Correct answer: 60 Hz and 6 Hz

Solution

The beat frequency is the absolute difference between the two given frequencies. The frequencies are 330 Hz and 330/5.5 Hz = 60 Hz. Thus, the beat frequency is |330 - 60| = 270 Hz. However, the question seems to have a typo in the options, as none match this calculation. Assuming the intended question was about the difference between 66 Hz and 60 Hz, the beat frequency would be 6 Hz.

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