10. Which of the following is an example of electromagnetic wave? A infrared waves C. sound waves B. rope waves D. water waves 11. What is the unit of intensity level of sound? A. Ampere C. Hertz B. Decibel D. Newton 12. Which of the following is pitch closely related? A. amplitude C. intensity B. frequency D. wavelength

Answers 1

Answer:

10.A

11.D

12.B

Sana makatulong God bless po

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