Frequencies of two sound waves are $334 ext{ Hz}$ and $326 ext{ Hz}$. If the velocity of the sound is $330 ext{ ms}^{-1}$, then the beat period when the two waves superimpose, is [MP PMT 2013]

Question

Frequencies of two sound waves are $334	ext{ Hz}$ and $326	ext{ Hz}$. If the velocity of the sound is $330	ext{ ms}^{-1}$, then the beat period when the two waves superimpose, is [MP PMT 2013]

Aicharya · Accepted Answer

Given, $f_1 = 334	ext{ Hz}$, $f_2 = 326	ext{ Hz}$, $v = 330	ext{ ms}^{-1}$ Combined frequency, $f = f_1 - f_2 = 334 - 326 = 8	ext{ Hz}$ Time period, $T = \frac{1}{f} = \frac{1}{8} = 0.125	ext{ s}$

Frequencies of two sound waves are $334\text{ Hz}$ and $326\text{ Hz}$. If the velocity of the sound is…

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