Question

state the laws of reflection of sound waves and it two applications

Answer 1

When sound travels in a given medium, it strikes the surface of another medium and bounces back in some other direction, this phenomenon is called the reflection of sound. The waves are called the incident and reflected sound waves.

What are incident and reflected sound waves?

The sound waves that travel towards the reflecting surface are called the incident sound waves. The sound waves bouncing back from the reflecting surface are called reflected sound waves. For all practical purposes, the point of incidence and the point of reflection are the same point on the reflecting surface.

A perpendicular drawn on the point of incidence is called the normal. The angle which the incident sound waves makes with the normal is called the angle of incidence, "i". The angle which the reflected sound waves makes with the normal is called the angle of reflection, "r".

Let’s look at the two laws of reflection

The following two laws of reflection of light are applicable to sound waves as well:

The incident wave, the normal to the reflecting surface and the reflected wave at the point of incidence lie in the same plane.The angle of incidence ∠i is equal to the angle of reflect