Question
If an electromagnetic wave is described as having a frequency of 3 GHz, what are its period and wavelength (in a vacuum)?
1. $3.0 \times 10^9 \textrm{ s}$, 10 cm
2. $3.3 \times 10^{-10} \textrm{ s}$, 10 cm
3. $3.3 \times 10^{-10} \textrm{ s}$, 10 m
4. $3.0 \times 10^9 \textrm{ s}$, 10 m

(b)

Solution Video