Two forks A and B when sounded together produce four beats $s^{- 1}$. The fork A is in unison with 30 cm length of a sonometer wire and B is in unison with 25 cm length of the same wire at the same tension. The frequencies of the forks are

Question

Dr. Abubacker · Accepted Answer

(b) $\frac{n_{1}}{n_{2}} = \frac{l_{2}}{l_{1}} = \frac{25}{30} = \frac{5}{6}$
$n_{2} - n_{1} = 4,$On solving, we get $n_{2} = 24\ Hz$,
$n_{1} = 20\ Hz$.

Q. Two forks A and B when sounded together produce four beats $s^{- 1}$. The fork A is in unison with 30 cm length of a sonometer wire and B is in unison with 25 cm length of the same wire at the same tension. The frequencies of the forks are

Explanation

Reviewed by Dr. Abubacker

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