Question

A wave travels at a speed of $798m{s}^{-1}$. If its wavelength is $3m$. what is the frequency of the wave? Will it be audible or not?

• A. $2394Hz$, inaudible
• B. $266Hz$, Audible
• C. $26600Hz$, audible
• D. $26600Hz$, Inaudible

Answer 1

Answer: (B)

$266Hz$, Audible

$v=798m{s}^{-1}$, $\lambda =3m$
$v=$$\lambda$$f$
$f=\frac{v}{\lambda }=\frac{798}{3}=266Hz$
Since audible range of frequency is $20Hz$ to $20,000Hz$. The given frequency will be audible.