Given
The frequency is
[tex]n=2.43\times10^{16}Hz[/tex]To find
The corresponding wavelength
Explanation
We know the velocity of a photon of EMR is same as the velocity of light
Thus,
[tex]\begin{gathered} v=n\lambda \\ \Rightarrow\lambda=\frac{3\times10^8}{2.43\times10^{16}} \\ \Rightarrow\lambda=1.23\times10^{-8}m \end{gathered}[/tex]Conclusion
The required wavelength is
[tex]1.23\times10^{-8}m[/tex]