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A train moving at a speed of 220 ms–1 towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is : [2012M] (speed of sound in air is 330 ms–1)
  • a)
    3500 Hz
  • b)
    4000 Hz
  • c)
    5000 Hz
  • d)
    3000 Hz
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A train moving at a speed of 220 ms–1 towards a stationary objec...
Frequency of the echo detected by the driver of the train is (According to Doppler effect in sound)
where f = original frequency of source of sound f' = Apparent frequency of source because of the relative motion between source and observer.
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A train moving at a speed of 220 ms–1 towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is : [2012M] (speed of sound in air is 330 ms–1)a)3500 Hzb)4000 Hzc)5000 Hzd)3000 HzCorrect answer is option 'C'. Can you explain this answer?
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A train moving at a speed of 220 ms–1 towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is : [2012M] (speed of sound in air is 330 ms–1)a)3500 Hzb)4000 Hzc)5000 Hzd)3000 HzCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A train moving at a speed of 220 ms–1 towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is : [2012M] (speed of sound in air is 330 ms–1)a)3500 Hzb)4000 Hzc)5000 Hzd)3000 HzCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A train moving at a speed of 220 ms–1 towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as echo. The frequency of the echo as detected by the driver of the train is : [2012M] (speed of sound in air is 330 ms–1)a)3500 Hzb)4000 Hzc)5000 Hzd)3000 HzCorrect answer is option 'C'. Can you explain this answer?.
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