Radar signals are electromagenetic radiation in the microwave region of the spectrum. Typical radar has a wavelength of 3.19 cm. What is the frequency in hertz ?

Question

3087 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-04-12T13:52:20

Approximately #1.06*10^-10# hertz.

We use the wavelength equation, which states that,

#v=flambda#

#f# is the frequency in hertz

#lambda# is the wavelength in meters

All electromagnetic waves have the speed of light, #c#, which is #3*10^8 \ "m/s"#.

So, we got:

#f=lambda/v=lambda/c#

#lambda=3.19 \ "cm"=3.19*10^-2 \ "m"#

And then,

#f=(3.19*10^-2color(red)cancelcolor(black)"m")/(3*10^8color(red)cancelcolor(black)"m""/s")~~1.06*10^-10 \ "s"^-1=1.06*10^-10 \ "Hz"#