Echo Frequency Moving Train (Jee Mains) | ExamDuo
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Doppler effect in sound
Medium
Echo Frequency Moving Train
The frequency of echo will be _______
Hz
if the train blowing a whistle of frequency
320
Hz
is moving with a velocity of
36
km
∕
h
towards a hill from which an echo is heard by the train driver. Velocity of sound in air is
330
m
∕
s
.
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