xi) The sound emitted from the siren of an
ambulance has frequency of 1500 Hz.
The speed of sound is 340 m/s. Calculate
the difference in frequencies heard by a
stationary observer if the ambulance
initially travels towards and then away
from the observer at a speed of 30 m/s.
[Ans : 266.79 Hz]
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Answer:
we know according to doppler effect,fobs =v-vobs v- source
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