Answer:
[tex]Wavelength=232.56\ m[/tex]
Explanation:
The relation between frequency and wavelength is shown below as:
[tex]c=frequency\times Wavelength[/tex]
c is the speed of light having value [tex]3\times 10^8\ m/s[/tex]
Given, Frequency = 1290 kHz = [tex]1290\times 10^{3}\ Hz[/tex] (As 1 kHz = 1000 Hz )
Thus, Wavelength is:
[tex]Wavelength=\frac{c}{Frequency}[/tex]
[tex]Wavelength=\frac{3\times 10^8}{1290\times 10^{3}}\ m[/tex]
[tex]Wavelength=232.56\ m[/tex]