beat frequency

Question

Beat frequency between two sources f1, f2 is:

RankGuru · Accepted Answer

Beats occur when two waves of slightly different frequencies $f_1$ and $f_2$ travel in the same direction and superimpose.
- At some points, they are in phase (constructive), and at others, they are out of phase (destructive).
- This produces an 'envelope' wave whose intensity pulses (beats) periodically. 
- The frequency of these pulsations is given by the change in relative phase, which is $f_{beat} = |f_1 - f_2|$.

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beat frequency

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More beat frequency Practice Questions

Two sources 256 Hz and 250 Hz. Beats per second?