Suppose you are listening to a radio station that broadcasts at a frequency of 97 Mhz (megahertz).Which of the following statements is true?
A)The radio waves from the radio station are causing electrons in your radio's antenna to move up and down 97 million times each second.
B)The radio waves from the radio station have a wavelength of 97 million meters.
C)The "radio waves" received by your radio are not light waves like those we talk about in astronomy,but rather are a special type of sound wave.
D)The radio station broadcasts its signal with a power of 97 million watts.

Question

Quizplus · Accepted Answer

The frequency of 97 MHz means that the radio waves from the station are oscillating or moving up and down 97 million times per second. This oscillation causes electrons in the antenna of the radio to move up and down as well, creating an electrical signal that can be converted into sound. Option B is incorrect because the wavelength of a frequency of 97 MHz is around 3 meters, not 97 million meters. Option C is also incorrect because "radio waves" are electromagnetic waves, not sound waves. Option D is also incorrect because the frequency of 97 MHz provides information about the number of oscillations per second, not the power of the signal.

Suppose You Are Listening to a Radio Station That Broadcasts