8th Class Science Sample Paper Science Olympiad Model Test Paper-19

  • question_answer
    If frequencies of four vibrating objects P, Q, R and S are 5 Hz, 10 Hz, 12 Hz and 15 Hz respectively then which among the following will produces high pitch sound?

    A) P

    B) Q

    C) R

    D) S

    E) None of these

    Correct Answer: D


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