The average threshold of dark-adapted (scotopic) vision is 4.00 x 10-11 W/m? at a central wavelength of 500 nm. If light having this intensity and wavelength enters the eye and the pupil is open to its maximum diameter of 8.50 mm, how many photons per second enter the eye?

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The average threshold of dark-adapted (scotopic) vision is 4.00 x 10-11 W/m? at
a central wavelength of 500 nm. If light having this intensity and wavelength
enters the eye and the pupil is open to its maximum diameter of 8.50 mm, how
many photons per second enter the eye?
Transcribed Image Text:The average threshold of dark-adapted (scotopic) vision is 4.00 x 10-11 W/m? at a central wavelength of 500 nm. If light having this intensity and wavelength enters the eye and the pupil is open to its maximum diameter of 8.50 mm, how many photons per second enter the eye?
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