Question

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

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

two different instruments playing notes at the same frequency
two different instruments playing notes at the same frequency

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

Answer 1

Two of the same instrument playing notes at slightly different frequencies.

Beats occur when two tones with nearly equal frequencies interfere; the beat rate equals the frequency difference.