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A siren emitting a sound of frequency 80...

A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of `15 ms^(-1)`. Then, the frequency of sound that the observer hears in the echo reflected from the cliff is (Take velocity of sound in air = `330 ms^(-1)`)

A

838 Hz

B

885 Hz

C

765 Hz

D

800 Hz

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TARGET PUBLICATION-Sound-Exercise
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