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

9th Class Science Sample Paper Science Olympiad Model Test Paper-10

  • question_answer
    When we increase the loudness of the sound produced by a radio, the property of sound wave that changes is its_______.

    A) Amplitude

    B) Crest

    C) Trough

    D) Frequency

    E) None of these

    Correct Answer: A

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