Suppose you are standing in the dark facing a 20-W LED light bulb 100m away. If the

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Suppose you are standing in the dark facing a 20-W LED light bulb 100m away. If the diameter of the your pupils is about 8mm under these conditions, about how many photons of visible light enter your eye every second.

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Physics

ISBN: 978-1118486894

10th edition

Authors: David Young, Shane Stadler

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Posted Date: Feb 15, 2019 09:11 AM

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Suppose you are standing in the dark facing a 20-W LED light bulb 100m away. If the

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Power 20 watt LED Distance 100 meters Diameter of pupil 8mm 8 10 ... View the full answer

Physics

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