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[" (3) "205Hz],[" A.source of sound "S" ...

[" (3) "205Hz],[" A.source of sound "S" emitting waves of frequency "],[100Hz" and an observer "O" are located at some "],[" distance from each other.The source is moving "],[" with a speed of "19.4ms^(-1)" at an angle of "60^(@)" with "],[" the source observer line as shown in the figure.The "],[" observer is at rest.The apparent frequency "],[" observer is at rest.The apparent frequency "],[" observed by the observer (velocity of sound in air "],[330ms^(-1)" ),is "],[[" (1) "97Hz," (2) "100Hz],[" (3) "103Hz," (4) "106Hz]]

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A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving with a speed of 19.4ms^-1 at an angle of 60^(@) with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air 330ms^-1 ) is

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