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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Sound Waves Hc verma last question
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atavistic (52)

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A source emitting a sound of frequency f is placed at a large distance from an observer.The source starts moving towards the observer with a uniform acceleration a. Find the frequency heard by the observer corresponding to the wave emitted just after the source starts. The speed of sound in the medium is v.
    
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svj29 (2186)

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Required Frequency n
       = v+vo  into v =    v     into v
          v - vs              v-at
 
       =  u into v  =   2uv2
               v - a.1/2v    2uv-a
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