For What Wavelength Does a 100-MW Laser Beam Deliver 1

question 40

Multiple Choice

For what wavelength does a 100-mW laser beam deliver 1.6 × 10¹⁷ photons in one second? (c = 3.0 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s)

• A)320 nm
• B)330 nm
• C)340 nm
• D)350 nm

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