Question

Identify the device which work on the reflection of sound.

• A. Megaphone
• B. Stethoscope
• C. Sound boards
• D. All of the above

Answer 1

The correct option is D All of the above

Megaphone, Stethoscope and Sound boards work on the reflection of sound.

$1.$Megaphone is a portable, cone shaped acoustic horn used to amplify a person's voice or other sounds and direct it in a given direction.

$2.$Stethoscope is an acoustic medical device for listening to the internal sounds of an animal or human body.

$3.$Sound board is the surface of a string instrument that the string vibrate against.