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  3. 5th Class
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  5. Lights, Sound and Force

5th Class Science Lights, Sound and Force Question Bank Light and Sound

  • question_answer
    Waves which ranges from 20 hz to 20,000 hz:

    A) Cannot be heard by human beings.

    B) Is hearing range for human beings.

    C) Hearing range of bat.

    D) Hearing range of dolphins.

    E) None of these

    Correct Answer: B

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