A 300 H_(Z) source, an observer and a wind are moving as shows in the figure with respect to the ground. What frequency is heard by observer ? Take speed of sound in air = 340 m//s . underset(20m//s)overset(observer)(larr) underset(rarr)(rarr)5 m//s underset(10m//s)overset(source)(rarr)
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Explanation:
f' = f (x) (V- Vω- Vo)/ (V- Vω-Vs)
= 300 x (340 - 5 -20)/ (340 - 5 + 10)
= 247 Hz
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