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


2

1

4

3

Answer 1

aammmm
the answer is one because gap of frequency is one

Answer 2

Answer:2

Explanation:

No. of beat=v2-v1

So there will be two beats -1 and 1

By taking the difference.