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I. Multiple Choice: Choose the letter of the correct answer. Write your answer on the space provided. ons Cred d. supersonic 1. The pith of the sound is determined by its d. loudness a. frequency b. intensity charmonics 2. The reason why water boils causing the circular motion is due to? a, radiation d. Intensity b. Conduction c Convection 3. The human voice is produced by the vibration of the. a. larynx b. vocal cord c. trachea d. voice box 4. Which component of white light has the greatest energy? a blue b.green d. violet 5. The sound with frequency higher than 20 000 hz are called a. ultrasonic b. subsonic c. infrasonic 6. It refers to the energy delivered into a unit area of a surface per unit time a. Pitch b. Loudness c. Intensity d. Frequency 7. An electromagnetic wave visible to the human eye. a. Sound b. Heat c Intensity d. Light 8. It refers to the brightness of a light source. It is express in candela a Luminous intensity b. Luminous flux c. Illuminance d. Heat 9. The science of the measurement of the brightness of light. a. Biotechnology b. Photometry c. Intensity d. Amplitide 10. Audible range of cat Cats hearing is a. 12 000 Hz C. 45 to 85000 Hz b. 50 to 45000 Hz. d.75 to 150 000 Hz
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