Question

A Mixelluswass.ccshouCommunication devices likeTVs and cell phones use whichpart(s) of the EM spectrum?A Mixelluswass.cashou® GETions> load< undeA. radioB. gamma raysC. microwavesD. A&C

Answer 1

Communication devices use frequencies in between 800 Hz and 900 MHz.

BY definition, this interval on frequency corresponds to radio waves, into the EM spectrum.