If the frequency of a sound wave is 250 hertz and its wavelength is 1.36 meterswhat is the wave's velocity?

We know,

wave velocity = frequency * wavelength

= 1.36 Hertz * 250 meters

= 340 meters.Hz

But, we know, 1 Hertz = 1/second

Therefore, wave velocity = 340 meters/second.

Option (B).

The frequency is the no. Of cycles per unit time. Graphically the greater the frequency, the narrower the waves, or periods, appear hence having smaller wavelengths. The speed of sound is simply suffering from the temperature and the medium however at any given of the mentioned reasons, it should be constant.

By v = nλ

=>v = 250 x 1.36 = 340 m/s

=>(B)

veolcity=wavelength*freq.

=1.36*250

=340m/s