Three sound waves of equal amplitudes have frequencies (n - 1), n, (n + 1). They superimpose to give beats. The number of beats produced per second will be

Question

Three sound waves of equal amplitudes have frequencies (n - 1), n, (n + 1). They superimpose to give beats. The number of beats produced per second will be (A) 1 (B) 4 (C) 3 (D) 2

Tardigrade Admin · Accepted Answer

Maximum difference of frequency = (n + 1) - (n - 1) = 2

Q. Three sound waves of equal amplitudes have frequencies $(n - 1), n, (n + 1)$ . They superimpose to give beats. The number of beats produced per second will be

1

4

3

2

Maximum difference of frequency
$= (n + 1) - (n - 1) = 2$

Q. Three sound waves of equal amplitudes have frequencies (n−1),n,(n+1). They superimpose to give beats. The number of beats produced per second will be

1

4

3

2

Maximum difference of frequency =(n+1)−(n−1)=2

Q. Three sound waves of equal amplitudes have frequencies $(n - 1), n, (n + 1)$ . They superimpose to give beats. The number of beats produced per second will be

Maximum difference of frequency
$= (n + 1) - (n - 1) = 2$