How Many Photons Per Second Emerge from a Laser of Power

question 30

Multiple Choice

How many photons per second emerge from a laser of power with wavelength (c = 3.00 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s)

• A) 6.09 × 10¹⁵ photons/s
• B) 5.03 × 10¹² photons/s
• C) 3.07 × 10¹⁵ photons/s
• D) 3.07 × 10¹³ photons/s

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