1. The velocity with which the particles of the medium vibrate in order to transfer the energy in the form of a wave is called  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity.
2. The velocity with which the wave travels through the medium is called  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity.
3. The speed of sound is  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity proportional to the square root of the elastic modulus.
4. the velocity of sound in solids  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity as the density increases.
5. The velocity of sound in a gas is directly proportional to the square root of its  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity.
6. When sound waves travel in a given medium and strike the surface of another medium, they can be bounced back into the first medium. This phenomenon is known as  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity.
7. The medium in which the velocity of sound increases compared to other medium is called  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity medium.
8. When reflected from a convex surface, the reflected waves are diverged out and the  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity is decreased.
9. An  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity is the sound reproduced due to the reflection of the original sound from various rigid surfaces.
10. The minimum distance required to hear an echo is  17.2decreasesdirectlyechointensityparticle velocityrarerreflectiontemperaturewave velocity m.