Question

Alexander Graham Bell invented the door bell.

• A. True
• B. False

Answer 1

The correct option is B False

1. The loudness of sound is measured in decibels $\left(dB\right)$.
2. The decibel was taken as the unit of loudness, in honor of Alexander Graham Bell, the scientist who invented the telephone.
3. Joseph Henry invented the doorbell.

Hence, the given statement is false.