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9th Class Science Sample Paper Science Olympiad Model Test Paper-17

  • question_answer
    A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02s. If the speed of sound in salt water is\[1531\text{ }m/s\], how far away is the cliff?

    A) 648 m

    B) 780.8 m

    C) 1025 m

    D) 2125 m

    E) None of these

    Correct Answer: B

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