The speed of a wave is 65 m/sec. If the wavelength of the wave is 0.8 meters, what is the frequency of the wave?

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Answer 1 · 2016-03-06T06:50:23

$81.25 Hz$

If $v$ is the speed, $lamda$ is the wavelength and the frequency $f$ of a wave is given by:

$f=v/lamda$

Here $v=65 m/s$ , $lamda=0.8 m$

$implies f=65/0.8=81.25 Hz$

Hence, the frequency of the given wave is $81.25 Hz$ .

Answer 2 · 2016-03-06T06:53:37

$81.25$ per second

Relation between speed $S$ of wave, its wavelength $w$ and it frequency $f$ is

$S=wxxf$

As speed of a wave is 65 m/sec .and wavelength of the wave is 0.8 meters, the frequency of the wave is given by

$f=65/0.8=81.25$ per second