Your amplifier is playing a 200 Hz tone. When you double the amplitude (loudness), what happens to the speed of the sound (v) and the frequency (f)?
A. v doubles, f stays the same
B. v doubles, f also doubles
C. v stays the same, and f doubles
D. v and f both stay the same
E. v and f both decrease
Answer (2)
Its d. Speed (v) and frequency(f) both stay the same.
Because Amplitude does not affect wave frequency. When you put more energy into the wave (larger amplitude) it does not affect how often you repeat a cycle. Also speed can be altered when the medium changes through which it travels.
When you double the amplitude of a sound wave, the frequency and the speed of sound do not change. The frequency remains at 200 Hz, and the speed of sound stays constant. Thus, the correct answer is option D: v and f both stay the same.
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