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A man sitting on a swing which is moving to an angle of 60^(@) from the vertical is blowing a whistle is 2.0 m from the fixed support point of the whistle sound is kept in front of the swing. The maximum frequency the sound detechor detected is : |
Answer» <html><body><p>`2.027 <a href="https://interviewquestions.tuteehub.com/tag/khz-1063029" style="font-weight:bold;" target="_blank" title="Click to know more about KHZ">KHZ</a>`<br/>`1.974 kHz`<br/>`9.74kHz`<br/>`1.011kHz`</p>Solution :Frequency `v= 2 kHz` <br/> <a href="https://interviewquestions.tuteehub.com/tag/velocity-1444512" style="font-weight:bold;" target="_blank" title="Click to know more about VELOCITY">VELOCITY</a> of whistle (source) `v_(s)=2m` <br/> Velocity of sound `v=332m/s`<br/> <a href="https://interviewquestions.tuteehub.com/tag/maximum-556915" style="font-weight:bold;" target="_blank" title="Click to know more about MAXIMUM">MAXIMUM</a> frequency `v_("<a href="https://interviewquestions.tuteehub.com/tag/max-546895" style="font-weight:bold;" target="_blank" title="Click to know more about MAX">MAX</a>")=((V+V_(s))/(V))v` <br/> `=((332+2)/(332))xx2` <br/> `=((334)/(332)xx2` <br/> `1.006xx2` <br/> `2.012 kHz`</body></html> | |