The human eye can just detect green light of wavelength 500 nm if it arrives at the retina at the rate of 2 × 10^-18 W. How many photons arrive each second? (c = 3.0 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s)

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The Answer of The human eye can just detect green light of wavelength 500 nm if it arrives at the retina at the rate of 2 × 10^-18 W. How many photons arrive each second? (c = 3.0 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s)

The Human Eye Can Just Detect Green Light of Wavelength