Question

3. What happens to the sound an object makes when the speed of vibrations
decreases (slow down)?
A. Its volume will increase.
C. Its pitch becomes lower
D. Its volume decreases.​

Answer 1

The correct option is c) its pitch becomes lower.

Explanation:

• The vibration speed of an object is directly proportional to the pitch of an object.
• When the speed of vibration increases in an object, the pitch also increases. Similarly, when the speed of vibration decreases or slows down, the pitch becomes lower.
• For example, the strings of a guitar are thick, which makes slower vibrations and that is why the pitch is deepest.