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The cylindrical beam of a 14.9-mW laser is 0.890 cm in diameter. What is the rms value of the electric field?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 12CQ: A 2.0-mW helium-neon laser transmits a continuous beam of red light of cross-sectional area 0.25...

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The cylindrical beam of a 14.9-mW laser is 0.890 cm in diameter. What is the rms value of the electric field?

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