The frequency of the radiation = 10GHz
Explanation:The wavelength of the electromagnetic radiation, λ = 3.5 cm
λ = 3.5/100 m
λ = 0.035 m
The speed of light, c = 3 x 10⁸ m/s
Calculate the frequency (f) of the radiation using the formula:
[tex]\begin{gathered} f=\frac{c}{\lambda} \\ \\ f=\frac{3\times10^8}{0.035} \\ \\ f=10^{10}Hz \\ \\ f=10\times10^9Hz \\ \\ f=10GHz \end{gathered}[/tex]The frequency of the radiation = 10GHz