Question

The number of beats heard per second if there are three sources of frequencies (n-1) , n , (n+1) of equal intensity sounded together is

Answer 1

Answer:

2

Explanation:

Beat Frequency - Δ v - | v₁ - v₂|

Beats produced is 2 two wave frequency  are as follows :-

(1) and (2)  n - (n-1) = 1

(2) and (3)  (n+1) - n = 1

(1) and (3)  (n+1) -  (n-1) = 2

Hence the answer is 2.