Question

Give two practical applications of reflection of sound waves.

Answer 1

A)in sonar the law of reflection of sound wave is used.

B)in stethoscope the law of reflection of sound wave is used.

C) in megaphones this law is all used.

Answer 2

The practical applications of the reflection of sound waves are:

• If we visit a hill station and climb the top of the hill and say anything very louder we can hear the same sound coming back to us. This is an example of an echo where the sound reflects back to us. This is concept is used by the submarines to generate signals and if the signal returns to them it marks the presence of an enemy nearby.
• Doctors use the technique of ultrasonography to create a digital image of any internal body parts. Sometimes it is also used to check on the movement of the baby inside a pregnant woman's womb.