# For light with a wavelength of 4.30 ?m, calculate the corresponding wavenumber value.

## Question:

For light with a wavelength of 4.30 ?m, calculate the corresponding wavenumber value.

## Waves:

Waves are the result of some sort of disturbance in matter. When a body of water is disturbed like throwing a rock into a pond a water wave is generated. The distance between the heights of the waves is the wavelength.

The wavenumber of this wave is 0.233 m{eq}^{-1} {/eq}.

To get the wavenumber {eq}\nu {/eq} we invert the wavelength {eq}\lambda {/eq}.

{eq}\nu =\dfrac{1}{\lambda}\\ \nu =\dfrac{1}{4.30\:m}\\ \boxed {\nu =0.233\:m^{-1}} {/eq}