Question

If the frequency of an electromagnetic wave is 6.0 x 108 Hz, what is its wavelength?

Answer 1

The frequency and length of the electromagnetic wave are related by the formula

$\lambda =\frac{c}{\nu}$

Where $c=3 \cdot 10^{8}m/s$ - speed of light

Then we write

$\lambda =\frac{c}{\nu} =\frac{3 \cdot 10^{8}m/s}{6 \cdot 10^{8}1/s}=0.5 m$