In which case will a beat frequency most likely occur?(1 point)

Responses

two of the same instrument playing notes at the same frequency
two of the same instrument playing notes at the same frequency

two different instruments playing notes at very different frequencies
two different instruments playing notes at very different frequencies

two of the same instrument playing notes at slightly different frequencies
two of the same instrument playing notes at slightly different frequencies

two different instruments playing notes at the same frequency

1 answer

A beat frequency is most likely to occur in the case of "two of the same instrument playing notes at slightly different frequencies." When the frequencies are close but not identical, they will produce a periodic variation in amplitude known as a beat frequency, which is heard as a fluctuation in volume.