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प्रश्न
What is meant by the Doppler effect?
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उत्तर
When the source and the observer are in relative motion with respect to each other and to the medium in which sound is propagated, the frequency of the sound wave observed is different from the frequency of the source. This phenomenon is called Doppler Effect.
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संबंधित प्रश्न
The engine of a train sounds a whistle at frequency v. The frequency heard by a passenger is
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Source in motion and Observer at rest
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- if the observer is in front of the source.
- if the observer is behind the train.
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