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  3. 9th Class
  4. Science

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

  • question_answer
    A ball is dropped from the edge of a roof. It takes 1 s to cross a window of height 7.9 m. find the height of the roof above the top of the window.

    A) 2.3 m

    B) 1.25 m

    C) 3.6 m

    D) 0.46 m

    E) None of these

    Correct Answer: D

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