Sonic boom is an explosive noise caused by the shock waves from an aircraft (or any other object) which is travelling faster than the speed of sound.
It is due to the very high speed of light that we see the flash of lightning first and it is due to comparatively low speed of sound that the thunder is heard a little later.
Reflection of the sound is the bouncing back of sound when it strikes a hard surface.
If we take two tubes and position them against a wall, as shown in the figure below. Upon placing a speaker or any other source of sound near one end of the tube, we receive the sound at the end of the other tube. This activity proves that the surface of wall reflects the sound wave.
The laws of reflection of light are obeyed during the reflection of sound.
The reflection of sound is utilised in the working of devices such as:
Stethoscope is a medical instrument used by the doctors for listening to the sounds produced within the human body, mainly in the heart and the lungs.
Start your learning Journey !