The frequency is 1.98 x 10 ^5 Hz.
In terms of science, electromagnetic radiation is made up of electromagnetic field waves that are traveling through space while carrying radiant electromagnetic energy. It consists of X-rays, gamma rays, microwaves, infrared, light, and radio waves. These waves are all a component of the electromagnetic spectrum.
B = 1.2 x 10 ^(-6) sin[ 2 x 3.14 (z/240 - 10^7 x t/8)
B = B' sin( kz - wt )
From the formula ,
10^7 /8 = w
frequency of the wave = w / 2 x 3.14 =1.98 x 10^5 Hz
To learn more about magnetic waves:
https://brainly.com/question/2780221
#SPJ4