Question

Sound waves of frequency 2.0kHz travel through a substance at a speed of 800m/s.What is the wavelength of the waves?

Answer 1

Answer:

Explanation:

λ=v/ν

  =800/2×10^3

   =0.4m

Answer 2

The wavelength of the waves is 0.4 meters.

Explanation:

We have,

Frequency of the sound waves, f = 2 kHz

Speed of the wave, v = 800 m/s

It is required to find the wavelength of the waves. The speed of a wave in terms of wavelength and frequency is given by :

$v=f\lambda$

$\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{800\ m/s}{2\times 10^3\ Hz}\\\\\lambda=0.4\ m$

So, the wavelength of the waves is 0.4 meters.

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