Question

A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case:

• A. Sound will be louder but pitch will not be different
• B. Sound will be louder and pitch will also be higher.
• C. Sound will be louder but pitch will be lower
• D. Both pitch and loudness will remain unaffected.

Answer 1

The correct option is A

Sound will be louder but pitch will not be different

1. The pitch of the sound is a characteristic of a sound that differentiates between a shrill sound and a flat sound.
2. It is determined by the frequency of vibration of the particles.
3. A high frequency will result in a high-pitched and shrill sound.
4. A low frequency will result in a low-pitched and flat sound.
5. If the piano is struck again much harder, it will not affect the pitch, as by striking the piano harder, only amplitude changes.
6. This will only affect the loudness of the sound.

Thus, option A is correct.