Physics - Finding the period of electrons' motion when given the frequency of the radio wave?

A certain radio station broadcasts at 102.5 megahertz. This is the frequency of oscillation of electrons in the transmitting antenna producing the radio wave. Find the period of the electrons' motion.Physics - Finding the period of electrons' motion when given the frequency of the radio wave?( very simple : the radio station broadcast the radio waves which are form of electromagnetic waves and travel with the speed of 3 x 10 ^8 m/s



so in ur problem here given is freq f=102.5 MHz = 102.5 x 10^6 Hz



and we know that speed of EM Wave ie radio wave = 3 x 10 ^ 8 m/s



so period of electrons motin is T = 1/f



T = 1/102.5 x 10^6 = 9.75 x 10 ^ -9 second