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An 800-MW Laser Beam Emits a Cylindrical Beam of Single-Wavelength Sinusoidal

Question 49

Multiple Choice

An 8.00-mW laser beam emits a cylindrical beam of single-wavelength sinusoidal light 0.600 mm in diameter.What is the maximum value of the $\vec { B }$ field in the laser beam? (ε₀ = 8.85 × 10^-12 C²/N ∙ m²,μ₀ = 4π × 10^-7 T ∙ m/A,c = 3.0 × 10⁸ m/s)

A) 9.24 µT
B) 17.2 µT
C) 12.4 µT
D) 20.5 µT
E) 15.4 µT

An 800-MW Laser Beam Emits a Cylindrical Beam of Single-Wavelength Sinusoidal

Multiple Choice

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