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Answer to Question #61830 in Other Physics for DEVENDRA SINGH

Question #61830
b) i) Explain Doppler effect and obtain expression for apparent frequency when the
source as well as the listener are in motion.

ii) A train moving with speed 72 km h−1 emits a whistle of frequency 600 Hz. A
person is standing stationary on the platform. Calculate the frequency heard by the
person if the train (i) approaches and (ii) recedes away from the listener.
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