Question

calculate the wavelength of an ultrasonic wave of frequency 10^5. the velocity of sound is 330 m/s​

Answer 1

We know the relation between velocity, frequency and wavelength of a wave.

$\large\lambda=\dfrac {v}{\nu}$

where $\lambda$ is the wavelength, $v$ is the velocity and $\nu$ is the frequency of the wave.

Here, we're given,

$\nu=10^5\ Hz\\\\v=330\ m\ s^{-1}$

Then the wavelength of the sound wave is,

$\lambda =\dfrac {v}{\nu}\\\\\\\lambda=\dfrac {330}{10^5}\\\\\\\large {\boxed {\lambda =3.3\times10^{-3}\ m}}$

Thus the answer is 3.3 × 10^(-3) m.

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