On what factor does the pitch of sound depend ?

Options

A. Amplitude
B. time period
C. Distance of sound
D. Frequency of sound

Answer

**Step-by-Step Solution:**

1. **Understanding Pitch**:
- Pitch is a quality of sound that allows us to differentiate between sounds. It helps us identify whether a sound is high (shrill) or low (faint).

2. **Identifying the Factor**:
- The pitch of a sound is determined by its frequency. Frequency refers to the number of oscillations or vibrations that occur in one second.

3. **Relationship Between Pitch and Frequency**:
- Pitch is directly proportional to frequency. This means that as the frequency increases, the pitch also increases. Conversely, if the frequency decreases, the pitch decreases as well.

4. **Frequency and Sound Characteristics**:
- A sound with a higher frequency will have a higher pitch, making it sound sharper or more shrill. For example, a whistle has a higher pitch than a bass drum.

5. **Amplitude and Pitch**:
- It is important to note that pitch is independent of amplitude. Amplitude refers to the intensity or loudness of the sound, but it does not affect the pitch.

6. **Conclusion**:
- Therefore, the pitch of sound depends solely on its frequency.

**Final Answer**: The pitch of sound depends on frequency.

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