Problem — FM wavelength (100 MHz)

Problem

An FM radio station broadcasts at frequency $f=100$ MHz. Calculate the wavelength in vacuum ($c=3{,}00\cdot 10^8$ m/s).

Solution

Setup. For an electromagnetic wave in vacuum $c=\lambda f$ holds, so $\lambda=c/f$.

Calculation. With $f=100$ MHz $=1{,}00\cdot 10^8$ Hz:

$\lambda=\frac{c}{f}=\frac{3{,}00\cdot 10^8}{1{,}00\cdot 10^8}$

$\ev{\lambda=3{,}00\;\text{m}}$

Links

Topics: Onde elettromagnetiche Concepts: Onda elettromagnetica