A laser emits a narrow beam of light. The radius of the beam is 8.3 mm, and the power is 4.3 mW. What is the intensity of the laser beam? Number i Units >

University Physics Volume 1
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ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
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Chapter16: Waves
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Problem 79P: A device called an insolation meter is used to measure the intensity of sunlight. It has an area of...
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A laser emits a narrow beam of light. The radius of the beam is 8.3 mm, and the power is 4.3 mW. What is the intensity of the laser
beam?
Number i
Units
>
Transcribed Image Text:A laser emits a narrow beam of light. The radius of the beam is 8.3 mm, and the power is 4.3 mW. What is the intensity of the laser beam? Number i Units >
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