Question

A radio wave has a frequency of 1x10⁶ Hz. What is it's wavelength?

6A radio wave has a frequency of 1x10

Answer 1

$f = 1×10^6Hz\\ c = 3 × 10^8 m/s\\ \lambda = ?$

Using,

$c = \lambda f$

$\lambda =\dfrac{c}{f} = \dfrac{3×10^8}{1×10^6} = 3×10^2m$ = 300m

Therefore, the wavelength of the radio wave is 300m.