Loudness as deternined the _______ vibration.

Options

A. Amplitude
B. Frequency
C. Length
D. None of them

Answer

**Step-by-Step Solution:**

1. **Understanding Loudness**: Loudness is a property of sound that allows us to distinguish between sounds that have the same frequency. It is a subjective measure of how we perceive the intensity of sound.

2. **Factors Affecting Loudness**: The loudness of a sound is primarily influenced by two factors: amplitude and intensity.
- **Amplitude**: This refers to the maximum displacement of particles from their mean position in a sound wave. The larger the amplitude, the louder the sound.
- **Intensity**: This is the amount of energy carried by the sound waves per unit area. Higher intensity also contributes to a louder sound.

3. **Independence from Frequency**: It is important to note that loudness is independent of frequency. This means that two sounds can have the same frequency but different loudness levels based on their amplitude and intensity.

4. **Conclusion**: Therefore, the correct answer to the question is that loudness is determined by the **amplitude** of vibration.

**Final Answer**: Loudness is determined by the **amplitude** of vibration.

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