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9th Class Science Sample Paper Science Olympiad Model Test Paper-20

  • question_answer
    A man stands at a distance of 255 m from a cliff. He fires a gun and hears the echo after 1.5 seconds. Calculate the speed of sound in air.

    A) \[330\text{ }m/s\]

    B) \[333\text{ }m/s\]

    C) \[340\text{ }m/s\]

    D) \[342\text{ }m/s\]

    E) None of these

    Correct Answer: C

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