Projectile motion
Average Velocity and instantaneous velocity
Doppler Effect
Quality of a sound
Nodes and Antinodes
Stationary Wave
Echo
EchoIntroduction : The sound wave travelling in the form of wave has the similar property of reflecting from a surface from where it is incident. The sound after reflection travels back towards the source and if it reflect again , the process goes on until the energy of the wave becomes zero. The reflection of the sound after reflection from rigid...