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What are time period and amplitude of a sound wave?
 
Time period:
 
The time taken for  of a sound wave is called the time period of the sound wave.
 
It is denoted by the letter , and its unit is .
 
Amplitude:
 
The  of a particle of the medium from the mean position is called the amplitude of the wave. Amplitude defines the  of sound.
 
It is denoted by the letter , and its unit is .