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Q.4 of 54
A whistle of frequency fo = 1300Hz is dropped from a height
H=505 m above the ground. At the same time, a detector is
projected upwards with velocity u = 50 ms along the same
line. If the velocity of sound is V=300ms 1, The frequency
detected by the detector after t = 5s is (g=10ms 2)​

Answer 1

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