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Posted: **Wed Jul 06, 2022 10:15 am**

: If A 60 W Lightbulb Emits 2 5 Of The Input Energy As Visible Light Average Wavelength 550 Nm Uniformly In All Directi 1 (27.68 KiB) Viewed 12 times

: If A 60 W Lightbulb Emits 2 5 Of The Input Energy As Visible Light Average Wavelength 550 Nm Uniformly In All Directi 2 (18.35 KiB) Viewed 12 times

If a 60-W lightbulb emits 2.5% of the input energy as visible light (average wavelength 550 nm) uniformly in all directions. Part A How many photons per second of visible light will strike the pupil (4.0 mm diameter) of the eye of an observer 1.6 m away? Express your answer using two significant figures. ΔΝ AN-1.0.10¹2 At 15. ΑΣΦΑ XXb√√x √x x x Submit Previous Answers Request Answer 1x1 ین ? x-10" X S photons/s
▼ Part B How many photons per second of visible light will strike the pupil (4.0 mm diameter) of the eye of an observer 1.5 km away? Express your answer using two significant figures. 15. ΑΣΦ AN₂ At = Submit Request Answer ? photons/s