Question

Two harmonic sound waves reach an overseveer simulatenouslt. the obsever hears the sound intensity rise and fall with a time of 0.2 between the maximmu intensity and the successing minimum intensity. What is the difference in frequency of the two sound waves?

Answer 1

Answer:

$dF=2.5Hz$

Explanation:

From the question we are told that:

Time $T=0.2sec$

Generally the Period is given as

 $T= 2 * 0.2 = 0.4$

Therefore difference in frequency dF

 $dF=\frac{1}{T}$

 $dF=\frac{1}{0.4}$

 $dF=2.5Hz$