Waves and photons

Exercise 1

A radio station emits at a frequency of 92.5 MHz. What is the wavelength of the electromagnetic waves emitted by the station

$\nu$ $=$ $92.5\cdot 10^6 \frac{1}{s}$ $\lambda$ $=$ $\frac{c}{\nu}$ $=$ $\frac{3 \cdot 10^8}{92.5\cdot 10^6}$ $=$ $3.2 m$