2. Sample Papers
  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Olympiad Model Test Paper-7

  • question_answer
    A person listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?

    A) 0.002 s

    B)  0.025 s

    C)  1.025 s

    D)  2.125 s

    E)  None of these

    Correct Answer: A

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