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Question: Answered & Verified by Expert
The intensity of a sound appears to an observer to be periodic. Which of the following can be the cause of it?
PhysicsWave OpticsWBJEEWBJEE 2018
Options:
  • A The intensity of the source is periodic
  • B The source is moving towards the observer
  • C The observer is moving away from the source
  • D The source is producing a sound composed of two nearby frequencies
Solution:
2060 Upvotes Verified Answer
The correct answers are: The intensity of the source is periodic, The source is producing a sound composed of two nearby frequencies
The intensity of a sound source appears be periodic due to
(i) source intensity is periodic.
(ii) source is producing a sound composed of two nearby frequencies.

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