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A small source of sound oscillates in simple harmonic motion with an amplitude of 17cm.A detector is placed along the line of motion of the source.The source emits a sound of frequency 800Hz which travels at a speed of 340m/s.If the width of the frequency band detected by the detector is 8Hz, find the time period of the source.

A small source of sound oscillates in simple harmonic motion with an amplitude of 17cm.A detector is placed along the line of motion of the source.The source emits a sound of frequency 800Hz which travels at a speed of 340m/s.If the width of the frequency band detected by the detector is 8Hz, find the time period of the source.

Grade:12

1 Answers

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28 Points
5 years ago
Since particle is performing SHM , therefore maximum frequency of sound received by receiver will be , when source is at mean position and moving towards reciever.     
In case of minimum frequency the source must be at origin and moving away from the reciever 
 
Take velocity at mean position as Aw
You might be thinking about extreme postion but at that instant the velocity of source will be zero and reciever recieves the original frequency.

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