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  3. 9th Class
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9th Class Science Sample Paper Science Olympiad Model Test Paper-12

  • question_answer
    The frequency of a sound wave is 10 Hz. What is its time period?

    A) 0.1 second

    B) 0.01 second

    C) 0.001 second     

    D) 1 second

    E) None of these

    Correct Answer: A

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