Question

When two waves of almost equal frequencies n₁ and n₂ reach at a point simultaneously, what is the time interval between successive maxima?

Answer 1

Assume, n₁ > n₁

Frequency of Beat, v_b = n₁ - n₂

∴ Time period, \(T_b=\frac{1}{v_b}\)

= \(\frac{1}{n_1-n_2}s\)