At any given time, there are many radio waves traveling through the air. A radio's antenna picks up these radio waves, and then a tuner allows people to zero in on one radio wave frequency and listen to their favorite station. Which wave behavior can best explain how a radio tuner works?A diffractionB interferenceC reflectionD resonance
Question
At any given time, there are many radio waves traveling through the air. A radio's antenna picks up these radio waves, and then a tuner allows people to zero in on one radio wave frequency and listen to their favorite station. Which wave behavior can best explain how a radio tuner works?A diffractionB interferenceC reflectionD resonance
Solution
The best wave behavior that can explain how a radio tuner works is D. Resonance.
Here's why:
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Radio waves are a type of electromagnetic wave. They are produced by a transmitter and then picked up by a receiver, such as a radio.
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The radio's antenna picks up many different radio waves of different frequencies.
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The tuner in the radio is designed to resonate or vibrate at the same frequency as the desired radio wave. This is the principle of resonance - when one object vibrating at the same natural frequency of a second object forces that second object into vibrational motion.
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By adjusting the tuner, you change the natural frequency of the tuner. When the frequency of the tuner matches the frequency of the desired radio wave, the tuner resonates, amplifying that radio wave and allowing it to be heard clearly.
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The other wave behaviors listed - diffraction, interference, and reflection - do not directly explain how a radio tuner selects a specific frequency.
So
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