To determine which statement is true, let's analyze the relationship between frequency, wavelength, and pitch.
In an orchestra, when one drum plays a lower note than another drum, it has a lower frequency. The relationship between frequency (f), wavelength (λ), and the speed of sound (v) is given by the formula:
\[ v = f \times λ \]
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The frequencies of the waves formed by striking both drums are the same.
- This statement is false. The drum playing the lower note has a lower frequency.
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The frequency of the wave from the drum with the lower note is greater.
- This statement is false for the same reason. A lower note means a lower frequency.
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The wavelengths of the waves formed by striking both drums are the same.
- This statement is false. Wavelength typically changes with frequency, assuming the speed of sound is constant.
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The wavelength of the wave from the drum with the lower note is longer.
- This statement is true. Because the drum with the lower note has a lower frequency, it will have a longer wavelength.
Therefore, the correct answer is:
The wavelength of the wave from the drum with the lower note is longer.