Wave Motion 4 Question 21
20. A source of sound with frequency is moving with a velocity towards a wall and an observer is stationary between the source and the wall. When the observer is between the source and the wall he will hear beats.
Integer Answer Type Questions
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Answer:
Correct Answer: 20. (a)
Solution:
- For reflected wave an image of source
can assumed as shown. Since, both and are approaching towards observer, no beats will be heard.