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Question

The sound from an insect is produced when it vibrates its wings at an average rate of 500 vibrations per second :

(a) What is the time-period of the vibrations ?

(b) What is the frequency of the vibrations in hertz ?

(c) Can we hear this sound ? Why or why not ?


Solution

(a) T=1f=1500=0.002s

(b) The sound from an insect is produced when it vibrates its wings at an average rate of 500 vibrations per second

So frequency=500 hertz

c) Yes; Because its frequency is within the hearing range of humans


Physics
Science for Eighth Class
Standard VIII

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