NEET Physics Waves Questions Solved

An observer standing at station observes frequency 219 Hz when a train approaches and 184 Hz when train goes away from him. If velocity of sound in air is 340 m/s, then velocity of train and actual frequency of whistle will be 

(1) 15.5ms1,200Hz

(2) 19.5ms1,205Hz

(3) 29.5ms1,200Hz

(4) 32.5ms1,205Hz

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