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 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter16: Electromagnetic Waves
Section: Chapter Questions
Problem 56P: A small helium-neon laser has a power output of 2.5 mW What is the electromagnetic energy in a 1.0-m...
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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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