Q2Electromagnetic waves travel at?AThe speed of sound.B300 000 meters per second.CThe speed of light.D162 000 miles per hours.
Q3In regard to what does the term frequency mean?AThe number of waveform in one hour.BThe number of complete waveform passing a point in one second.CThe speed of radio waves in metres per second.DThe length of a complete waveform in metres.