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A source of frequency 50Hz is moving towards an observer with a deceleration of 2m/s2. If its initial speed is 20m/s, what will be the maximum frequency heard by the observer? Initial distance between source and observer is 100m. Speed of sound = 330m/s.
  • a)
    47.14Hz
  • b)
    0
  • c)
    53.22Hz
  • d)
    53.03Hz
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A source of frequency 50Hz is moving towards an observer with a decele...
Apparent frequency only depends on velocity and not the distance between source and observer. So, maximum frequency will be heard when speed is maximum, which is at the start. F = 50(330)/(330-20)
= 53.22Hz.
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A source of frequency 50Hz is moving towards an observer with a deceleration of 2m/s2. If its initial speed is 20m/s, what will be the maximum frequency heard by the observer? Initial distance between source and observer is 100m. Speed of sound = 330m/s.a)47.14Hzb)0c)53.22Hzd)53.03HzCorrect answer is option 'C'. Can you explain this answer?
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