defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Physics Waves Beats

The frequency of the beats heard when two sounds of close frequencies 'f1' and 'f2' superimpose is ____________.

1
f2 + f1
2
(f2 - f1)/2
3
(f2 + f1)/2
4
f2 - f1
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