Question

Loudness of the sound directly Proportional to the

• A. square of amplitude of vibration
• B. Half of amplitude of vibration
• C. Double of amplitude of vibration

Answer 1

The correct option is A

square of amplitude of vibration

Explanation of correct option.

Option A-

1. The loudness of sound depends on the amplitude of vibration of the vibrating object. Greater the amplitude of vibration, louder the sound will be.
2. The loudness of sound is directly proportional to the square of the amplitude of vibration. The loudness of sound is expressed in the units called the Decibel. The symbol of the decibel is Db.

Hence, (A) is the correct option.