i. What type of wave is a sound wave?
ii. Can sound travel in vacuum?
iii. What are reverberation and echo?
iv. What is meant by pitch of a sound?
Call
i. Sound wave is a longitudinal wave.
ii. Sound cannot travel in vacuum.
iii.
a. Reverberation is the phenomenon in which sound waves are reflected multiple times causing a single sound to be heard more than once.
b. An echo is the repetition of the original sound because of reflection by some surface.
iv. The characteristic of sound which is determined by the value of frequency is called as the pitch of the sound.
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