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  3. 9th Class
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9th Class Science Sample Paper Science Olympiad Model Test Paper-6

  • question_answer
    A boy starts moving around a circular park of radius r. Find his displacement when he completes one revolution.

    A) \[0\]

    B) \[r\]

    C) \[\pi /r\]

    D) \[2\pi /r\]

    E) None of these by

    Correct Answer: A

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