Page 1 of 1
If a 70 W lightbulb emits 5.0 % of the input energy as visible light (average wavelength 650 nm) uniformly in all direct
Posted: Fri Apr 29, 2022 11:53 am
by answerhappygod
- If A 70 W Lightbulb Emits 5 0 Of The Input Energy As Visible Light Average Wavelength 650 Nm Uniformly In All Direct 1 (13.9 KiB) Viewed 27 times
If a 70 W lightbulb emits 5.0 % of the input energy as visible light (average wavelength 650 nm) uniformly in all directions, estimate 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. VO AP ? photons/s Submit Request Answer