Answer:
[tex]0.86\times 10^{10} Hz[/tex]
Explanation:
Given that, the wavelength of the microwave radiation is,
[tex]\lambda=3.5 cm=3.5\times 10^{-2}m[/tex]
And as we know that the speed of the wave is,
[tex]v=3\times 10^{8}m/s[/tex]
Now the frequency of the microwave radiation can be calculated as
[tex]f=\frac{v}{\lambda}[/tex]
Here, f is the frequency of microwave signal, v is the speed of the signal and [tex]\lambda[/tex] is the wavelength of signal.
Now put all the given variable in above equation.
[tex]f=\frac{3\times 10^{8}m/s}{3.5\times 10^{-2}m } \\f=0.86\times 10^{10} Hz[/tex]
This the required frequency.
