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Physics

Chapter 4 - Alternating Current AC Circuits

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Chapter 5 - Dual Nature of Wave and Particle

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Chapter 6 - Atomic Spectra and X-Rays

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Chapter 7 - Lasers and Principles

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Chapter 8 - Modern Electronics and Semiconductors

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Quiz

Lesson 1: Laser Physics, Population Inversion and the Helium-Neon Laser — Picture questions (exam style)

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1.
A laser beam is 5.00 mm wide at the exit with divergence 2.00 mrad. What is the spot diameter 50.0 m away (as shown)?
A laser beam is 5.00 mm wide at the exit with divergence 2.00 mrad. What is the spot diameter 50.0 m away (as shown)?
0.100 m
0.205 m
0.105 m
0.0550 m