Question
What happens when the vibration of a sound source becomes faster?
The correct answer is
The frequency and pitch both increase.
When the vibration of a sound source becomes faster, both the frequency and pitch increase. Here's the explanation:
- Understanding Frequency: Frequency refers to the number of vibrations or oscillations per second. It is measured in Hertz (Hz). A faster vibration means more oscillations per second, which leads to a higher frequency.
- Pitch and Frequency Relationship: The pitch of a sound is how high or low it sounds to a listener. Pitch is directly related to frequency: the higher the frequency, the higher the pitch. This correlation means that as the frequency increases due to faster vibrations, the pitch also increases.
- Examining the Options:
- Option 1: "The frequency and pitch both decrease." - This is incorrect because, as explained above, faster vibrations lead to a higher frequency and pitch.
- Option 2: "The frequency and pitch both increase." - This is the correct answer because faster vibrations increase both the frequency and pitch.
- Option 3: "The pitch stays the same regardless of the vibration speed." - This is incorrect because pitch changes with changes in frequency, which is affected by vibration speed.
- Option 4: "The frequency increases, but pitch decreases." - This is incorrect. An increase in frequency results in an increase in pitch.
Therefore, the correct answer is that the frequency and pitch both increase.
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