Given

Frequency of oscillating charge

Explanation:

The frequency of electromagnetic wave produced due to oscillating charge is equal to the frequency of the oscillating charge, therefore the waves produced will have a frequency of 10⁹ Hz.

The radio waves have frequency range of 10¹¹ Hz to 10³ Hz, therefore the waves produced fall in the region of radio waves.

The wavelength of an electromagnetic wave is given as:

Where c is the speed of the wave, here c = 3 x 10⁸ m/s, hence